[INFO] fetching crate ju-tcs-rust-23-2 0.1.0...
[INFO] testing ju-tcs-rust-23-2-0.1.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate ju-tcs-rust-23-2 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate ju-tcs-rust-23-2 0.1.0
[INFO] finished tweaking crates.io crate ju-tcs-rust-23-2 0.1.0
[INFO] tweaked toml for crates.io crate ju-tcs-rust-23-2 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ju-tcs-rust-23-2 0.1.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23e00d807fa51e20b0844bf08af13af949715e7806a7a20218ba091e1f272932
[INFO] running `Command { std: "docker" "start" "-a" "23e00d807fa51e20b0844bf08af13af949715e7806a7a20218ba091e1f272932", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23e00d807fa51e20b0844bf08af13af949715e7806a7a20218ba091e1f272932", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23e00d807fa51e20b0844bf08af13af949715e7806a7a20218ba091e1f272932", kill_on_drop: false }`
[INFO] [stdout] 23e00d807fa51e20b0844bf08af13af949715e7806a7a20218ba091e1f272932
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 729241da89229ed34dcf592b17d5786fcf074cdc7f0f07b7b679ee338ad9fe1d
[INFO] running `Command { std: "docker" "start" "-a" "729241da89229ed34dcf592b17d5786fcf074cdc7f0f07b7b679ee338ad9fe1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling ju-tcs-rust-23-2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "729241da89229ed34dcf592b17d5786fcf074cdc7f0f07b7b679ee338ad9fe1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "729241da89229ed34dcf592b17d5786fcf074cdc7f0f07b7b679ee338ad9fe1d", kill_on_drop: false }`
[INFO] [stdout] 729241da89229ed34dcf592b17d5786fcf074cdc7f0f07b7b679ee338ad9fe1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41bed36bb4dfaeafc41e40334241e24dc353ddf7b6d5e894a2e878364dfde2ff
[INFO] running `Command { std: "docker" "start" "-a" "41bed36bb4dfaeafc41e40334241e24dc353ddf7b6d5e894a2e878364dfde2ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling ju-tcs-rust-23-2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "41bed36bb4dfaeafc41e40334241e24dc353ddf7b6d5e894a2e878364dfde2ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41bed36bb4dfaeafc41e40334241e24dc353ddf7b6d5e894a2e878364dfde2ff", kill_on_drop: false }`
[INFO] [stdout] 41bed36bb4dfaeafc41e40334241e24dc353ddf7b6d5e894a2e878364dfde2ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8c04585e4089181f562043a1f0b6a0840fc0c8f9673e6272ced099317781101e
[INFO] running `Command { std: "docker" "start" "-a" "8c04585e4089181f562043a1f0b6a0840fc0c8f9673e6272ced099317781101e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ju_tcs_rust_23_2-9167c34a678ce6fc)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::head_works_with_big_n ... ok
[INFO] [stdout] test tests::tail_works_with_big_n ... ok
[INFO] [stdout] test tests::tail_works_with_small_n ... ok
[INFO] [stdout] test tests::head_works_with_small_n ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ju_tcs_rust_23_2
[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" "8c04585e4089181f562043a1f0b6a0840fc0c8f9673e6272ced099317781101e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c04585e4089181f562043a1f0b6a0840fc0c8f9673e6272ced099317781101e", kill_on_drop: false }`
[INFO] [stdout] 8c04585e4089181f562043a1f0b6a0840fc0c8f9673e6272ced099317781101e