[INFO] cloning repository https://github.com/mark-summerfield/differ
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mark-summerfield/differ" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmark-summerfield%2Fdiffer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmark-summerfield%2Fdiffer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a80d1e1fc42f4e0c9a0f5e8beb36f6c70646af2
[INFO] testing mark-summerfield/differ against master#1ef7943ee607160a564655b6596f83670ef95df5 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmark-summerfield%2Fdiffer" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mark-summerfield/differ
[INFO] finished tweaking git repo https://github.com/mark-summerfield/differ
[INFO] tweaked toml for git repo https://github.com/mark-summerfield/differ written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mark-summerfield/differ on toolchain 1ef7943ee607160a564655b6596f83670ef95df5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mark-summerfield/differ already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.193
[INFO] [stderr]   Downloaded quote v1.0.33
[INFO] [stderr]   Downloaded proc-macro2 v1.0.70
[INFO] [stderr]   Downloaded serde_derive v1.0.193
[INFO] [stderr]   Downloaded syn v2.0.41
[INFO] [stderr]   Downloaded unicode-ident v1.0.12
[INFO] [stderr]   Downloaded fnv v1.0.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ca4b02a99ce720fbdb4ad2f5cdfd19072d77f9cf58529571e666a29062122fe
[INFO] running `Command { std: "docker" "start" "-a" "4ca4b02a99ce720fbdb4ad2f5cdfd19072d77f9cf58529571e666a29062122fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ca4b02a99ce720fbdb4ad2f5cdfd19072d77f9cf58529571e666a29062122fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ca4b02a99ce720fbdb4ad2f5cdfd19072d77f9cf58529571e666a29062122fe", kill_on_drop: false }`
[INFO] [stdout] 4ca4b02a99ce720fbdb4ad2f5cdfd19072d77f9cf58529571e666a29062122fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f63f8d4bc25d965fddbeaa62cc3595994da625e1ab6680b83ace88ac264ea8a
[INFO] running `Command { std: "docker" "start" "-a" "9f63f8d4bc25d965fddbeaa62cc3595994da625e1ab6680b83ace88ac264ea8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling differ v1.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "9f63f8d4bc25d965fddbeaa62cc3595994da625e1ab6680b83ace88ac264ea8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f63f8d4bc25d965fddbeaa62cc3595994da625e1ab6680b83ace88ac264ea8a", kill_on_drop: false }`
[INFO] [stdout] 9f63f8d4bc25d965fddbeaa62cc3595994da625e1ab6680b83ace88ac264ea8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 201d6bd8773de5cdfe3b1eb34089af0fe1c06214e54f8d93d3ad25b0259dba81
[INFO] running `Command { std: "docker" "start" "-a" "201d6bd8773de5cdfe3b1eb34089af0fe1c06214e54f8d93d3ad25b0259dba81", kill_on_drop: false }`
[INFO] [stderr]    Compiling differ v1.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> examples/simple.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct Item<'a> {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 37 |     // Can have any data
[INFO] [stdout] 38 |     x: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 39 |     y: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Item` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]    --> src/tests.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |     struct Item<'a> {
[INFO] [stdout]     |            ---- fields in this struct
[INFO] [stdout] 188 |         x: i32,
[INFO] [stdout]     |         ^
[INFO] [stdout] 189 |         y: i32,
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Item` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "201d6bd8773de5cdfe3b1eb34089af0fe1c06214e54f8d93d3ad25b0259dba81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "201d6bd8773de5cdfe3b1eb34089af0fe1c06214e54f8d93d3ad25b0259dba81", kill_on_drop: false }`
[INFO] [stdout] 201d6bd8773de5cdfe3b1eb34089af0fe1c06214e54f8d93d3ad25b0259dba81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1fa7227d04e7334c73ac63415fa5850ed14aaa035a168c87b3adae5385104667
[INFO] running `Command { std: "docker" "start" "-a" "1fa7227d04e7334c73ac63415fa5850ed14aaa035a168c87b3adae5385104667", kill_on_drop: false }`
[INFO] [stderr] warning: fields `x` and `y` are never read
[INFO] [stderr]   --> examples/simple.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 36 | struct Item<'a> {
[INFO] [stderr]    |        ---- fields in this struct
[INFO] [stderr] 37 |     // Can have any data
[INFO] [stderr] 38 |     x: i32,
[INFO] [stderr]    |     ^
[INFO] [stderr] 39 |     y: i32,
[INFO] [stderr]    |     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Item` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `differ` (example "simple") generated 1 warning
[INFO] [stderr] warning: fields `x` and `y` are never read
[INFO] [stderr]    --> src/tests.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 187 |     struct Item<'a> {
[INFO] [stderr]     |            ---- fields in this struct
[INFO] [stderr] 188 |         x: i32,
[INFO] [stderr]     |         ^
[INFO] [stderr] 189 |         y: i32,
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Item` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `differ` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/differ-cd6759088b3d12f2)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test tests::tests::t02 ... ok
[INFO] [stdout] test tests::tests::t01 ... ok
[INFO] [stdout] test tests::tests::t03 ... ok
[INFO] [stdout] test tests::tests::t04 ... ok
[INFO] [stdout] test tests::tests::t05 ... ok
[INFO] [stdout] test tests::tests::t06 ... ok
[INFO] [stdout] test tests::tests::t07 ... ok
[INFO] [stdout] test tests::tests::t08 ... ok
[INFO] [stdout] test tests::tests::t09 ... ok
[INFO] [stdout] test tests::tests::t10 ... ok
[INFO] [stdout] test tests::tests::t11 ... ok
[INFO] [stdout] test tests::tests::t12 ... ok
[INFO] [stdout] test tests::tests::t13 ... ok
[INFO] [stdout] test tests::tests::t14 ... ok
[INFO] [stdout] test tests::tests::t15 ... ok
[INFO] [stdout] test tests::tests::t16 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests differ
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 51) ... ok
[INFO] [stdout] test src/lib.rs - (line 84) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.20s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1fa7227d04e7334c73ac63415fa5850ed14aaa035a168c87b3adae5385104667", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fa7227d04e7334c73ac63415fa5850ed14aaa035a168c87b3adae5385104667", kill_on_drop: false }`
[INFO] [stdout] 1fa7227d04e7334c73ac63415fa5850ed14aaa035a168c87b3adae5385104667