[INFO] fetching crate mango_compiler_reducing 0.1.0...
[INFO] testing mango_compiler_reducing-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mango_compiler_reducing 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate mango_compiler_reducing 0.1.0 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 mango_compiler_reducing 0.1.0
[INFO] finished tweaking crates.io crate mango_compiler_reducing 0.1.0
[INFO] tweaked toml for crates.io crate mango_compiler_reducing 0.1.0 written to /workspace/builds/worker-3/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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 8d5739c974afa6c05a9100d21df89b8468f3c95a1bb5bdb0934cbf2c0baf5c5f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8d5739c974afa6c05a9100d21df89b8468f3c95a1bb5bdb0934cbf2c0baf5c5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d5739c974afa6c05a9100d21df89b8468f3c95a1bb5bdb0934cbf2c0baf5c5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d5739c974afa6c05a9100d21df89b8468f3c95a1bb5bdb0934cbf2c0baf5c5f", kill_on_drop: false }`
[INFO] [stdout] 8d5739c974afa6c05a9100d21df89b8468f3c95a1bb5bdb0934cbf2c0baf5c5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] a2a2c9e366710b9b29b02b6800d340a17ec6857c0f63b4d77e9a40a851c78ccd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a2a2c9e366710b9b29b02b6800d340a17ec6857c0f63b4d77e9a40a851c78ccd", kill_on_drop: false }`
[INFO] [stderr]    Compiling mango_compiler_reducing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "a2a2c9e366710b9b29b02b6800d340a17ec6857c0f63b4d77e9a40a851c78ccd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2a2c9e366710b9b29b02b6800d340a17ec6857c0f63b4d77e9a40a851c78ccd", kill_on_drop: false }`
[INFO] [stdout] a2a2c9e366710b9b29b02b6800d340a17ec6857c0f63b4d77e9a40a851c78ccd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] b3ea6112d83180e1ca4822c29da9a5bb1f418dacac2ab3cb8ef3d2e38bf2fd79
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b3ea6112d83180e1ca4822c29da9a5bb1f418dacac2ab3cb8ef3d2e38bf2fd79", kill_on_drop: false }`
[INFO] [stderr]    Compiling mango_compiler_reducing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "b3ea6112d83180e1ca4822c29da9a5bb1f418dacac2ab3cb8ef3d2e38bf2fd79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3ea6112d83180e1ca4822c29da9a5bb1f418dacac2ab3cb8ef3d2e38bf2fd79", kill_on_drop: false }`
[INFO] [stdout] b3ea6112d83180e1ca4822c29da9a5bb1f418dacac2ab3cb8ef3d2e38bf2fd79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ee479bbb2d1e0d58ff0308c79a94584c5afdcca6b7ff20cfb6ca1b3b8c79eaf4
[INFO] running `Command { std: "docker" "start" "-a" "ee479bbb2d1e0d58ff0308c79a94584c5afdcca6b7ff20cfb6ca1b3b8c79eaf4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mango_compiler_reducing-e4075e45800e98c6)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mango_compiler_reducing
[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" "ee479bbb2d1e0d58ff0308c79a94584c5afdcca6b7ff20cfb6ca1b3b8c79eaf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee479bbb2d1e0d58ff0308c79a94584c5afdcca6b7ff20cfb6ca1b3b8c79eaf4", kill_on_drop: false }`
[INFO] [stdout] ee479bbb2d1e0d58ff0308c79a94584c5afdcca6b7ff20cfb6ca1b3b8c79eaf4