[INFO] fetching crate concat_strs_impl 1.0.1...
[INFO] testing concat_strs_impl-1.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate concat_strs_impl 1.0.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate concat_strs_impl 1.0.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concat_strs_impl 1.0.1
[INFO] finished tweaking crates.io crate concat_strs_impl 1.0.1
[INFO] tweaked toml for crates.io crate concat_strs_impl 1.0.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6e01f4e299f6ba0f02b47ab5cd7bf343323ca9c4beaa7ed4a5726257b203f0c
[INFO] running `Command { std: "docker" "start" "-a" "c6e01f4e299f6ba0f02b47ab5cd7bf343323ca9c4beaa7ed4a5726257b203f0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6e01f4e299f6ba0f02b47ab5cd7bf343323ca9c4beaa7ed4a5726257b203f0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6e01f4e299f6ba0f02b47ab5cd7bf343323ca9c4beaa7ed4a5726257b203f0c", kill_on_drop: false }`
[INFO] [stdout] c6e01f4e299f6ba0f02b47ab5cd7bf343323ca9c4beaa7ed4a5726257b203f0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1eab46afe715ba04ef46c5b5bbc1aa32c8af1a082e4c2c4fb814c53b580e532f
[INFO] running `Command { std: "docker" "start" "-a" "1eab46afe715ba04ef46c5b5bbc1aa32c8af1a082e4c2c4fb814c53b580e532f", kill_on_drop: false }`
[INFO] [stderr]    Compiling concat_strs_impl v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "1eab46afe715ba04ef46c5b5bbc1aa32c8af1a082e4c2c4fb814c53b580e532f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eab46afe715ba04ef46c5b5bbc1aa32c8af1a082e4c2c4fb814c53b580e532f", kill_on_drop: false }`
[INFO] [stdout] 1eab46afe715ba04ef46c5b5bbc1aa32c8af1a082e4c2c4fb814c53b580e532f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63c04f4fc23e8d14eeb009219ee732c6589b9836221f7e0403f7dd39ab4a0331
[INFO] running `Command { std: "docker" "start" "-a" "63c04f4fc23e8d14eeb009219ee732c6589b9836221f7e0403f7dd39ab4a0331", kill_on_drop: false }`
[INFO] [stderr]    Compiling concat_strs_impl v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "63c04f4fc23e8d14eeb009219ee732c6589b9836221f7e0403f7dd39ab4a0331", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63c04f4fc23e8d14eeb009219ee732c6589b9836221f7e0403f7dd39ab4a0331", kill_on_drop: false }`
[INFO] [stdout] 63c04f4fc23e8d14eeb009219ee732c6589b9836221f7e0403f7dd39ab4a0331
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2a774fe2641e67d5e3b3f2b38e5c1e4d30122741984a544a93db26aca1588ad1
[INFO] running `Command { std: "docker" "start" "-a" "2a774fe2641e67d5e3b3f2b38e5c1e4d30122741984a544a93db26aca1588ad1", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/concat_strs_impl-a4d20324212c0729)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests concat_strs_impl
[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] [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" "2a774fe2641e67d5e3b3f2b38e5c1e4d30122741984a544a93db26aca1588ad1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a774fe2641e67d5e3b3f2b38e5c1e4d30122741984a544a93db26aca1588ad1", kill_on_drop: false }`
[INFO] [stdout] 2a774fe2641e67d5e3b3f2b38e5c1e4d30122741984a544a93db26aca1588ad1