[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] 3bee8978e1f0230c4a58f97998a1f4ee2a3bb928
[INFO] testing mark-summerfield/differ against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmark-summerfield%2Fdiffer" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mark-summerfield/differ on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-9/source/Cargo.toml
[INFO] crate git repo https://github.com/mark-summerfield/differ already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `strip` has been stabilized in the 1.58 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/profiles.html#strip-option for more information about using this feature.
[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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44c6022766dc40944d1f5f118a98c8e612f014c83bfc5ae2743a7c28bf0a581e
[INFO] running `Command { std: "docker" "start" "-a" "44c6022766dc40944d1f5f118a98c8e612f014c83bfc5ae2743a7c28bf0a581e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44c6022766dc40944d1f5f118a98c8e612f014c83bfc5ae2743a7c28bf0a581e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44c6022766dc40944d1f5f118a98c8e612f014c83bfc5ae2743a7c28bf0a581e", kill_on_drop: false }`
[INFO] [stdout] 44c6022766dc40944d1f5f118a98c8e612f014c83bfc5ae2743a7c28bf0a581e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 319dc5a873eab9cfee6e5507e5bafa12c5007787164ab4063c31d58313ce2334
[INFO] running `Command { std: "docker" "start" "-a" "319dc5a873eab9cfee6e5507e5bafa12c5007787164ab4063c31d58313ce2334", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `strip` has been stabilized in the 1.58 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/profiles.html#strip-option for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling differ v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.45s
[INFO] running `Command { std: "docker" "inspect" "319dc5a873eab9cfee6e5507e5bafa12c5007787164ab4063c31d58313ce2334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "319dc5a873eab9cfee6e5507e5bafa12c5007787164ab4063c31d58313ce2334", kill_on_drop: false }`
[INFO] [stdout] 319dc5a873eab9cfee6e5507e5bafa12c5007787164ab4063c31d58313ce2334
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b34ef1859ca58385ea4625b34e336fe7135d79499bd43f3807630b91ae37e333
[INFO] running `Command { std: "docker" "start" "-a" "b34ef1859ca58385ea4625b34e336fe7135d79499bd43f3807630b91ae37e333", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `strip` has been stabilized in the 1.58 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/profiles.html#strip-option for more information about using this feature.
[INFO] [stderr]    Compiling differ v1.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> examples/simple.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     x: i32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> examples/simple.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     y: i32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]    --> src/tests.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         x: i32,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]    --> src/tests.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 189 |         y: i32,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "b34ef1859ca58385ea4625b34e336fe7135d79499bd43f3807630b91ae37e333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b34ef1859ca58385ea4625b34e336fe7135d79499bd43f3807630b91ae37e333", kill_on_drop: false }`
[INFO] [stdout] b34ef1859ca58385ea4625b34e336fe7135d79499bd43f3807630b91ae37e333
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 10f086a2100b67fcb0a1449e5175ad7ede4cc9818252ff5092dc85dab8e613a5
[INFO] running `Command { std: "docker" "start" "-a" "10f086a2100b67fcb0a1449e5175ad7ede4cc9818252ff5092dc85dab8e613a5", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `strip` has been stabilized in the 1.58 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/profiles.html#strip-option for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: field is never read: `x`
[INFO] [stderr]    --> src/tests.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |         x: i32,
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `y`
[INFO] [stderr]    --> src/tests.rs:189:9
[INFO] [stderr]     |
[INFO] [stderr] 189 |         y: i32,
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `differ` (lib test) generated 2 warnings
[INFO] [stderr] warning: field is never read: `x`
[INFO] [stderr]   --> examples/simple.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     x: i32,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `y`
[INFO] [stderr]   --> examples/simple.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     y: i32,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `differ` (example "simple") generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/differ-a9a8c3c4ada12ced)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test tests::tests::t01 ... ok
[INFO] [stdout] test tests::tests::t05 ... ok
[INFO] [stdout] test tests::tests::t04 ... ok
[INFO] [stdout] test tests::tests::t02 ... ok
[INFO] [stdout] test tests::tests::t06 ... ok
[INFO] [stdout] test tests::tests::t03 ... 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::t14 ... ok
[INFO] [stdout] test tests::tests::t13 ... ok
[INFO] [stdout] test tests::tests::t15 ... ok
[INFO] [stderr]    Doc-tests differ
[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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 83) ... ok
[INFO] [stdout] test src/lib.rs - (line 50) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.56s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "10f086a2100b67fcb0a1449e5175ad7ede4cc9818252ff5092dc85dab8e613a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10f086a2100b67fcb0a1449e5175ad7ede4cc9818252ff5092dc85dab8e613a5", kill_on_drop: false }`
[INFO] [stdout] 10f086a2100b67fcb0a1449e5175ad7ede4cc9818252ff5092dc85dab8e613a5