[INFO] cloning repository https://github.com/justinbarclay/diff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/justinbarclay/diff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinbarclay%2Fdiff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinbarclay%2Fdiff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b474157f4d0d2d2c667ba0bd8f2457eda8ef12e
[INFO] testing justinbarclay/diff against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinbarclay%2Fdiff" "/workspace/builds/worker-83/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-83/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/justinbarclay/diff on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/justinbarclay/diff
[INFO] finished tweaking git repo https://github.com/justinbarclay/diff
[INFO] tweaked toml for git repo https://github.com/justinbarclay/diff written to /workspace/builds/worker-83/source/Cargo.toml
[INFO] crate git repo https://github.com/justinbarclay/diff already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd63ff89615aad4f43aa465425ff13620309130f9613589354e67c6d4587434a
[INFO] running `Command { std: "docker" "start" "-a" "bd63ff89615aad4f43aa465425ff13620309130f9613589354e67c6d4587434a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd63ff89615aad4f43aa465425ff13620309130f9613589354e67c6d4587434a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd63ff89615aad4f43aa465425ff13620309130f9613589354e67c6d4587434a", kill_on_drop: false }`
[INFO] [stdout] bd63ff89615aad4f43aa465425ff13620309130f9613589354e67c6d4587434a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b22e9ef252d3a252f44c6eebecfdcf4175ddb6bafeb95e4a6dde9053924737d0
[INFO] running `Command { std: "docker" "start" "-a" "b22e9ef252d3a252f44c6eebecfdcf4175ddb6bafeb95e4a6dde9053924737d0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling rdiff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> src/negative_array.rs:52:10
[INFO] [stdout]    |
[INFO] [stdout] 52 |   pub fn get(&self, offset: isize) -> isize {
[INFO] [stdout]    |          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/negative_array.rs:62:10
[INFO] [stdout]    |
[INFO] [stdout] 62 |   pub fn set(&mut self, offset: isize, value: isize) -> &mut NegativeArray {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.69s
[INFO] running `Command { std: "docker" "inspect" "b22e9ef252d3a252f44c6eebecfdcf4175ddb6bafeb95e4a6dde9053924737d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b22e9ef252d3a252f44c6eebecfdcf4175ddb6bafeb95e4a6dde9053924737d0", kill_on_drop: false }`
[INFO] [stdout] b22e9ef252d3a252f44c6eebecfdcf4175ddb6bafeb95e4a6dde9053924737d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85bf9d3494197baddf89c07488deda1fe57f8c77294dd64855f86c97a9df22a5
[INFO] running `Command { std: "docker" "start" "-a" "85bf9d3494197baddf89c07488deda1fe57f8c77294dd64855f86c97a9df22a5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rdiff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "85bf9d3494197baddf89c07488deda1fe57f8c77294dd64855f86c97a9df22a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85bf9d3494197baddf89c07488deda1fe57f8c77294dd64855f86c97a9df22a5", kill_on_drop: false }`
[INFO] [stdout] 85bf9d3494197baddf89c07488deda1fe57f8c77294dd64855f86c97a9df22a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e1c0b5ded7290638b00c784fa47366b969778684f80329a57fdf42f0946b17dd
[INFO] running `Command { std: "docker" "start" "-a" "e1c0b5ded7290638b00c784fa47366b969778684f80329a57fdf42f0946b17dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stdout] running 14 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rdiff-213c755c844bee4a)
[INFO] [stdout] test diff::tests::a_short_squence_where_they_are_the_same ... ok
[INFO] [stdout] test diff::tests::gen_an_edit_sequence_for_a_diff_of_zero ... ok
[INFO] [stdout] test diff::tests::short_edit_sequence_for_empty_string ... ok
[INFO] [stdout] test diff::tests::short_edit_sequence_where_they_are_the_same ... ok
[INFO] [stdout] test diff::tests::short_edit_sequence_without_newlines ... ok
[INFO] [stdout] test negative_array::tests::creating_a_new_array ... ok
[INFO] [stdout] test negative_array::tests::using_get_and_set ... ok
[INFO] [stdout] test negative_array::tests::indexing_an_array ... ok
[INFO] [stdout] test diff::tests::short_edit_sequence ... ok
[INFO] [stdout] test diff::tests::gen_edit_graph ... ok
[INFO] [stdout] test diff::tests::greedy_diff ... ok
[INFO] [stdout] test diff::tests::split_string_hello ... ok
[INFO] [stdout] test diff::tests::short_edit_sequence_where_nothing_matches ... ok
[INFO] [stdout] test diff::tests::gen_edit_graph_without_newlines ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e1c0b5ded7290638b00c784fa47366b969778684f80329a57fdf42f0946b17dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1c0b5ded7290638b00c784fa47366b969778684f80329a57fdf42f0946b17dd", kill_on_drop: false }`
[INFO] [stdout] e1c0b5ded7290638b00c784fa47366b969778684f80329a57fdf42f0946b17dd