view tests/test-wireproto-command-changesetdata.t @ 42609:326fdce22fb2

rust: switch hg-core and hg-cpython to rust 2018 edition

Many interesting changes have happened in Rust since the Oxidation Plan was
introduced, like the 2018 edition and procedural macros:

    - Opting in to the 2018 edition is a clear benefit in terms of future
      proofing, new (nice to have) syntactical sugar notwithstanding. It
      also has a new non-lexical, non-AST based borrow checker that has
      fewer bugs(!) and allows us to write correct code that in some cases
      would have been rejected by the old one.
    - Procedural macros allow us to use the PyO3 crate which maintainers have
      expressed the clear goal of compiling on stable, which would help in
      code maintainability compared to rust-cpython.

In this patch are the following changes:
    - Removing most `extern crate` uses
    - Updating `use` clauses (`crate` keyword, nested `use`)
    - Removing `mod.rs` in favor of an aptly named module file

Like discussed in the mailing list (
https://www.mercurial-scm.org/pipermail/mercurial-devel/2019-July/132316.html
), until Rust integration in Mercurial is considered to be out of the
experimental phase, the maximum version of Rust allowed is whatever the latest
version Debian packages.

Differential Revision: https://phab.mercurial-scm.org/D6597

  $ . $TESTDIR/wireprotohelpers.sh

  $ hg init server
  $ enablehttpv2 server
  $ cd server
  $ cat >> .hg/hgrc << EOF
  > [phases]
  > publish = false
  > EOF
  $ echo a0 > a
  $ echo b0 > b

  $ hg -q commit -A -m 'commit 0'

  $ echo a1 > a
  $ echo b1 > b
  $ hg commit -m 'commit 1'
  $ echo b2 > b
  $ hg commit -m 'commit 2'
  $ hg phase --public -r .

  $ hg -q up -r 0
  $ echo a2 > a
  $ hg commit -m 'commit 3'
  created new head

  $ hg log -G -T '{rev}:{node} {desc}\n'
  @  3:eae5f82c2e622368d27daecb76b7e393d0f24211 commit 3
  |
  | o  2:0bb8ad894a15b15380b2a2a5b183e20f2a4b28dd commit 2
  | |
  | o  1:7592917e1c3e82677cb0a4bc715ca25dd12d28c1 commit 1
  |/
  o  0:3390ef850073fbc2f0dfff2244342c8e9229013a commit 0
  

  $ hg serve -p $HGPORT -d --pid-file hg.pid -E error.log
  $ cat hg.pid > $DAEMON_PIDS

No arguments is an invalid request

  $ sendhttpv2peer << EOF
  > command changesetdata
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  abort: missing required arguments: revisions!
  [255]

Missing nodes for changesetexplicit results in error

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{b'type': b'changesetexplicit'}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  abort: nodes key not present in changesetexplicit revision specifier!
  [255]

changesetexplicitdepth requires nodes and depth keys

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{b'type': b'changesetexplicitdepth'}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  abort: nodes key not present in changesetexplicitdepth revision specifier!
  [255]

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{b'type': b'changesetexplicitdepth', b'nodes': []}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  abort: depth key not present in changesetexplicitdepth revision specifier!
  [255]

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{b'type': b'changesetexplicitdepth', b'depth': 42}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  abort: nodes key not present in changesetexplicitdepth revision specifier!
  [255]

changesetdagrange requires roots and heads keys

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{b'type': b'changesetdagrange'}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  abort: roots key not present in changesetdagrange revision specifier!
  [255]

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{b'type': b'changesetdagrange', b'roots': []}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  abort: heads key not present in changesetdagrange revision specifier!
  [255]

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{b'type': b'changesetdagrange', b'heads': [b'dummy']}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  abort: roots key not present in changesetdagrange revision specifier!
  [255]

Empty changesetdagrange heads results in an error

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{b'type': b'changesetdagrange', b'heads': [], b'roots': []}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  abort: heads key in changesetdagrange cannot be empty!
  [255]

Sending just dagrange heads sends all revisions

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{
  >         b'type': b'changesetdagrange',
  >         b'roots': [],
  >         b'heads': [
  >             b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd',
  >             b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11',
  >         ]}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 4
    },
    {
      b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:'
    },
    {
      b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1'
    },
    {
      b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd'
    },
    {
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11'
    }
  ]

Sending root nodes limits what data is sent

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{
  >         b'type': b'changesetdagrange',
  >         b'roots': [b'\x33\x90\xef\x85\x00\x73\xfb\xc2\xf0\xdf\xff\x22\x44\x34\x2c\x8e\x92\x29\x01\x3a'],
  >         b'heads': [
  >             b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd',
  >         ]}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 2
    },
    {
      b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1'
    },
    {
      b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd'
    }
  ]

Requesting data on a single node by node works

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{
  >         b'type': b'changesetexplicit',
  >         b'nodes': [b'\x33\x90\xef\x85\x00\x73\xfb\xc2\xf0\xdf\xff\x22\x44\x34\x2c\x8e\x92\x29\x01\x3a']}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 1
    },
    {
      b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:'
    }
  ]

Specifying a noderange and nodes takes union

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[
  >         {
  >             b'type': b'changesetexplicit',
  >             b'nodes': [b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11'],
  >         },
  >         {
  >             b'type': b'changesetdagrange',
  >             b'roots': [b'\x75\x92\x91\x7e\x1c\x3e\x82\x67\x7c\xb0\xa4\xbc\x71\x5c\xa2\x5d\xd1\x2d\x28\xc1'],
  >             b'heads': [b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd'],
  >         }]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 2
    },
    {
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11'
    },
    {
      b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd'
    }
  ]

nodesdepth of 1 limits to exactly requested nodes

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{
  >         b'type': b'changesetexplicitdepth',
  >         b'nodes': [b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11'],
  >         b'depth': 1}] 
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 1
    },
    {
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11'
    }
  ]

nodesdepth of 2 limits to first ancestor

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{
  >         b'type': b'changesetexplicitdepth',
  >         b'nodes': [b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11'],
  >         b'depth': 2}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 2
    },
    {
      b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:'
    },
    {
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11'
    }
  ]

nodesdepth with multiple nodes

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     revisions eval:[{
  >         b'type': b'changesetexplicitdepth',
  >         b'nodes': [b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11', b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd'],
  >         b'depth': 2}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 4
    },
    {
      b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:'
    },
    {
      b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1'
    },
    {
      b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd'
    },
    {
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11'
    }
  ]

Parents data is transferred upon request

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     fields eval:[b'parents']
  >     revisions eval:[{
  >         b'type': b'changesetexplicit',
  >         b'nodes': [
  >             b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11',
  >         ]}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 1
    },
    {
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11',
      b'parents': [
        b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:',
        b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
      ]
    }
  ]

Phase data is transferred upon request

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     fields eval:[b'phase']
  >     revisions eval:[{
  >         b'type': b'changesetexplicit',
  >         b'nodes': [
  >             b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd',
  >         ]}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 1
    },
    {
      b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd',
      b'phase': b'public'
    }
  ]

Revision data is transferred upon request

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     fields eval:[b'revision']
  >     revisions eval:[{
  >         b'type': b'changesetexplicit',
  >         b'nodes': [
  >             b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11',
  >         ]}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 1
    },
    {
      b'fieldsfollowing': [
        [
          b'revision',
          61
        ]
      ],
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11'
    },
    b'1b74476799ec8318045db759b1b4bcc9b839d0aa\ntest\n0 0\na\n\ncommit 3'
  ]

Bookmarks key isn't present if no bookmarks data

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     fields eval:[b'bookmarks']
  >     revisions eval:[{
  >         b'type': b'changesetdagrange',
  >         b'roots': [],
  >         b'heads': [
  >             b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd',
  >             b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11',
  >         ]}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 4
    },
    {
      b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:'
    },
    {
      b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1'
    },
    {
      b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd'
    },
    {
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11'
    }
  ]

Bookmarks are sent when requested

  $ hg -R ../server bookmark -r 0bb8ad894a15b15380b2a2a5b183e20f2a4b28dd book-1
  $ hg -R ../server bookmark -r eae5f82c2e622368d27daecb76b7e393d0f24211 book-2
  $ hg -R ../server bookmark -r eae5f82c2e622368d27daecb76b7e393d0f24211 book-3

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     fields eval:[b'bookmarks']
  >     revisions eval:[{
  >         b'type': b'changesetdagrange',
  >         b'roots': [],
  >         b'heads': [
  >             b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd',
  >             b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11',
  >         ]}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 4
    },
    {
      b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:'
    },
    {
      b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1'
    },
    {
      b'bookmarks': [
        b'book-1'
      ],
      b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd'
    },
    {
      b'bookmarks': [
        b'book-2',
        b'book-3'
      ],
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11'
    }
  ]

Bookmarks are sent when we make a no-new-revisions request

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     fields eval:[b'bookmarks', b'revision']
  >     revisions eval:[{
  >         b'type': b'changesetdagrange',
  >         b'roots': [b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11'],
  >         b'heads': [
  >             b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd',
  >             b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11',
  >         ]}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 2
    },
    {
      b'fieldsfollowing': [
        [
          b'revision',
          63
        ]
      ],
      b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1'
    },
    b'7f144aea0ba742713887b564d57e9d12f12ff382\ntest\n0 0\na\nb\n\ncommit 1',
    {
      b'bookmarks': [
        b'book-1'
      ],
      b'fieldsfollowing': [
        [
          b'revision',
          61
        ]
      ],
      b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd'
    },
    b'37f0a2d1c28ffe4b879109a7d1bbf8f07b3c763b\ntest\n0 0\nb\n\ncommit 2',
    {
      b'bookmarks': [
        b'book-2',
        b'book-3'
      ],
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11'
    }
  ]

Multiple fields can be transferred

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     fields eval:[b'parents', b'revision']
  >     revisions eval:[{
  >         b'type': b'changesetexplicit',
  >         b'nodes': [
  >             b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11',
  >         ]}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 1
    },
    {
      b'fieldsfollowing': [
        [
          b'revision',
          61
        ]
      ],
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11',
      b'parents': [
        b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:',
        b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
      ]
    },
    b'1b74476799ec8318045db759b1b4bcc9b839d0aa\ntest\n0 0\na\n\ncommit 3'
  ]

Base nodes have just their metadata (e.g. phase) transferred
TODO this doesn't work

  $ sendhttpv2peer << EOF
  > command changesetdata
  >     fields eval:[b'phase', b'parents', b'revision']
  >     revisions eval:[{
  >         b'type': b'changesetdagrange',
  >         b'roots': [b'\x33\x90\xef\x85\x00\x73\xfb\xc2\xf0\xdf\xff\x22\x44\x34\x2c\x8e\x92\x29\x01\x3a'],
  >         b'heads': [
  >             b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd',
  >             b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11',
  >         ]}]
  > EOF
  creating http peer for wire protocol version 2
  sending changesetdata command
  response: gen[
    {
      b'totalitems': 3
    },
    {
      b'fieldsfollowing': [
        [
          b'revision',
          63
        ]
      ],
      b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1',
      b'parents': [
        b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:',
        b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
      ],
      b'phase': b'public'
    },
    b'7f144aea0ba742713887b564d57e9d12f12ff382\ntest\n0 0\na\nb\n\ncommit 1',
    {
      b'fieldsfollowing': [
        [
          b'revision',
          61
        ]
      ],
      b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd',
      b'parents': [
        b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1',
        b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
      ],
      b'phase': b'public'
    },
    b'37f0a2d1c28ffe4b879109a7d1bbf8f07b3c763b\ntest\n0 0\nb\n\ncommit 2',
    {
      b'fieldsfollowing': [
        [
          b'revision',
          61
        ]
      ],
      b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11',
      b'parents': [
        b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:',
        b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
      ],
      b'phase': b'draft'
    },
    b'1b74476799ec8318045db759b1b4bcc9b839d0aa\ntest\n0 0\na\n\ncommit 3'
  ]

  $ cat error.log