[INFO] fetching crate loss 0.1.0...
[INFO] testing loss-0.1.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate loss 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate loss 0.1.0
[INFO] finished tweaking crates.io crate loss 0.1.0
[INFO] tweaked toml for crates.io crate loss 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate loss 0.1.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 28 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7207fa3266d2f0352aa97ac63f4b7dae436f9bc5aa4b21db07316d45ed6afd3d
[INFO] running `Command { std: "docker" "start" "-a" "7207fa3266d2f0352aa97ac63f4b7dae436f9bc5aa4b21db07316d45ed6afd3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7207fa3266d2f0352aa97ac63f4b7dae436f9bc5aa4b21db07316d45ed6afd3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7207fa3266d2f0352aa97ac63f4b7dae436f9bc5aa4b21db07316d45ed6afd3d", kill_on_drop: false }`
[INFO] [stdout] 7207fa3266d2f0352aa97ac63f4b7dae436f9bc5aa4b21db07316d45ed6afd3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 664c8f33c6f2d7b6a09d0361cd0b6990a1c9159da90c70611a98b0dc3b07f078
[INFO] running `Command { std: "docker" "start" "-a" "664c8f33c6f2d7b6a09d0361cd0b6990a1c9159da90c70611a98b0dc3b07f078", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling tracing-serde v0.2.0
[INFO] [stderr]    Compiling matchers v0.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling loss v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tracing::Subscriber`
[INFO] [stdout]   --> src/dead.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use tracing::Subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.56s
[INFO] running `Command { std: "docker" "inspect" "664c8f33c6f2d7b6a09d0361cd0b6990a1c9159da90c70611a98b0dc3b07f078", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "664c8f33c6f2d7b6a09d0361cd0b6990a1c9159da90c70611a98b0dc3b07f078", kill_on_drop: false }`
[INFO] [stdout] 664c8f33c6f2d7b6a09d0361cd0b6990a1c9159da90c70611a98b0dc3b07f078
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0043d10ef5df0555b744b665c35d398c85c65fe36997aa1e382af740ee524f2d
[INFO] running `Command { std: "docker" "start" "-a" "0043d10ef5df0555b744b665c35d398c85c65fe36997aa1e382af740ee524f2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling loss v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tracing::Subscriber`
[INFO] [stdout]   --> src/dead.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use tracing::Subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tracing::Subscriber`
[INFO] [stdout]   --> src/dead.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use tracing::Subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "0043d10ef5df0555b744b665c35d398c85c65fe36997aa1e382af740ee524f2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0043d10ef5df0555b744b665c35d398c85c65fe36997aa1e382af740ee524f2d", kill_on_drop: false }`
[INFO] [stdout] 0043d10ef5df0555b744b665c35d398c85c65fe36997aa1e382af740ee524f2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 89b640002e5d6d49ec1e3bcb1456dd48bb77974179f015df86e2d5164417ffe6
[INFO] running `Command { std: "docker" "start" "-a" "89b640002e5d6d49ec1e3bcb1456dd48bb77974179f015df86e2d5164417ffe6", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `tracing::Subscriber`
[INFO] [stdout] 
[INFO] [stderr]   --> src/dead.rs:28:5
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 28 | use tracing::Subscriber;
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `loss` (lib) generated 1 warning
[INFO] [stderr] warning: `loss` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/loss-e2cb2eef54f97eb6)
[INFO] [stderr]    Doc-tests loss
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 17) ... ok
[INFO] [stdout] test src/dead.rs - dead (line 20) ... ok
[INFO] [stdout] test src/dead.rs - dead (line 11) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "89b640002e5d6d49ec1e3bcb1456dd48bb77974179f015df86e2d5164417ffe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89b640002e5d6d49ec1e3bcb1456dd48bb77974179f015df86e2d5164417ffe6", kill_on_drop: false }`
[INFO] [stdout] 89b640002e5d6d49ec1e3bcb1456dd48bb77974179f015df86e2d5164417ffe6