[INFO] fetching crate rust_learner_j 0.1.0...
[INFO] testing rust_learner_j-0.1.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate rust_learner_j 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate rust_learner_j 0.1.0
[INFO] finished tweaking crates.io crate rust_learner_j 0.1.0
[INFO] tweaked toml for crates.io crate rust_learner_j 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust_learner_j 0.1.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rust_learner_j 0.1.0 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad2a531828ec52701307bd564634b564dff12d5bdc5b9b75176d1959650f4956
[INFO] running `Command { std: "docker" "start" "-a" "ad2a531828ec52701307bd564634b564dff12d5bdc5b9b75176d1959650f4956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad2a531828ec52701307bd564634b564dff12d5bdc5b9b75176d1959650f4956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad2a531828ec52701307bd564634b564dff12d5bdc5b9b75176d1959650f4956", kill_on_drop: false }`
[INFO] [stdout] ad2a531828ec52701307bd564634b564dff12d5bdc5b9b75176d1959650f4956
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3ee56ed7aaf9230c46ff0bb544b588a6c70033c4b69f42ee695da6bf8c3d7c4
[INFO] running `Command { std: "docker" "start" "-a" "b3ee56ed7aaf9230c46ff0bb544b588a6c70033c4b69f42ee695da6bf8c3d7c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learner_j v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "b3ee56ed7aaf9230c46ff0bb544b588a6c70033c4b69f42ee695da6bf8c3d7c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3ee56ed7aaf9230c46ff0bb544b588a6c70033c4b69f42ee695da6bf8c3d7c4", kill_on_drop: false }`
[INFO] [stdout] b3ee56ed7aaf9230c46ff0bb544b588a6c70033c4b69f42ee695da6bf8c3d7c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16c0a4f44f6bf12a474dd90f2eaa2667f32a7f89ad0298d29ec072fef34b56a5
[INFO] running `Command { std: "docker" "start" "-a" "16c0a4f44f6bf12a474dd90f2eaa2667f32a7f89ad0298d29ec072fef34b56a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learner_j v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "16c0a4f44f6bf12a474dd90f2eaa2667f32a7f89ad0298d29ec072fef34b56a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16c0a4f44f6bf12a474dd90f2eaa2667f32a7f89ad0298d29ec072fef34b56a5", kill_on_drop: false }`
[INFO] [stdout] 16c0a4f44f6bf12a474dd90f2eaa2667f32a7f89ad0298d29ec072fef34b56a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8db095cd2ef91b6b12c8fcb6fd3e763d743027635936af780a63ff1c6b51699c
[INFO] running `Command { std: "docker" "start" "-a" "8db095cd2ef91b6b12c8fcb6fd3e763d743027635936af780a63ff1c6b51699c", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_learner_j-991b4fde55ab59c9)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8db095cd2ef91b6b12c8fcb6fd3e763d743027635936af780a63ff1c6b51699c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8db095cd2ef91b6b12c8fcb6fd3e763d743027635936af780a63ff1c6b51699c", kill_on_drop: false }`
[INFO] [stdout] 8db095cd2ef91b6b12c8fcb6fd3e763d743027635936af780a63ff1c6b51699c