[INFO] fetching crate mango_compiler_util 0.1.0...
[INFO] testing mango_compiler_util-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate mango_compiler_util 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate mango_compiler_util 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mango_compiler_util 0.1.0
[INFO] finished tweaking crates.io crate mango_compiler_util 0.1.0
[INFO] tweaked toml for crates.io crate mango_compiler_util 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7fe22ef938d60ce5e6a69ac5f7b4929dd706d6c8a1894ff4cef75f8e1de5658
[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" "d7fe22ef938d60ce5e6a69ac5f7b4929dd706d6c8a1894ff4cef75f8e1de5658", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7fe22ef938d60ce5e6a69ac5f7b4929dd706d6c8a1894ff4cef75f8e1de5658", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7fe22ef938d60ce5e6a69ac5f7b4929dd706d6c8a1894ff4cef75f8e1de5658", kill_on_drop: false }`
[INFO] [stdout] d7fe22ef938d60ce5e6a69ac5f7b4929dd706d6c8a1894ff4cef75f8e1de5658
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", 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] 449061f84d83ea73cbce2c7f79259649d4d8d1b2f9ec90573938ff405873ce80
[INFO] running `Command { std: "docker" "start" "-a" "449061f84d83ea73cbce2c7f79259649d4d8d1b2f9ec90573938ff405873ce80", kill_on_drop: false }`
[INFO] [stderr]    Compiling mango_compiler_util v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "449061f84d83ea73cbce2c7f79259649d4d8d1b2f9ec90573938ff405873ce80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "449061f84d83ea73cbce2c7f79259649d4d8d1b2f9ec90573938ff405873ce80", kill_on_drop: false }`
[INFO] [stdout] 449061f84d83ea73cbce2c7f79259649d4d8d1b2f9ec90573938ff405873ce80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5751c0aad212608371a353614bfe62d6b0c8255e1d6c4eece59168d44d91fbf6
[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" "5751c0aad212608371a353614bfe62d6b0c8255e1d6c4eece59168d44d91fbf6", kill_on_drop: false }`
[INFO] [stderr]    Compiling mango_compiler_util v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "5751c0aad212608371a353614bfe62d6b0c8255e1d6c4eece59168d44d91fbf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5751c0aad212608371a353614bfe62d6b0c8255e1d6c4eece59168d44d91fbf6", kill_on_drop: false }`
[INFO] [stdout] 5751c0aad212608371a353614bfe62d6b0c8255e1d6c4eece59168d44d91fbf6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 172a384d3ff67cbca59fb88c909234e248344f6f321201b5388b17a2975a1dbf
[INFO] running `Command { std: "docker" "start" "-a" "172a384d3ff67cbca59fb88c909234e248344f6f321201b5388b17a2975a1dbf", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mango_compiler_util-e53fedbbb027c044
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr]    Doc-tests mango_compiler_util
[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] [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" "172a384d3ff67cbca59fb88c909234e248344f6f321201b5388b17a2975a1dbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "172a384d3ff67cbca59fb88c909234e248344f6f321201b5388b17a2975a1dbf", kill_on_drop: false }`
[INFO] [stdout] 172a384d3ff67cbca59fb88c909234e248344f6f321201b5388b17a2975a1dbf