[INFO] fetching crate cargo-frc 0.4.0...
[INFO] testing cargo-frc-0.4.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate cargo-frc 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cargo-frc 0.4.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-frc 0.4.0
[INFO] finished tweaking crates.io crate cargo-frc 0.4.0
[INFO] tweaked toml for crates.io crate cargo-frc 0.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e15d3341c625ab705310e64c3f6e3eeb06e805a6375d29f3e45bc3d836c338a3
[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" "e15d3341c625ab705310e64c3f6e3eeb06e805a6375d29f3e45bc3d836c338a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e15d3341c625ab705310e64c3f6e3eeb06e805a6375d29f3e45bc3d836c338a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e15d3341c625ab705310e64c3f6e3eeb06e805a6375d29f3e45bc3d836c338a3", kill_on_drop: false }`
[INFO] [stdout] e15d3341c625ab705310e64c3f6e3eeb06e805a6375d29f3e45bc3d836c338a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 440c245809e6c3deae255f37a46ac07e41b2101d06b5dd71ad761f704acf209f
[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" "440c245809e6c3deae255f37a46ac07e41b2101d06b5dd71ad761f704acf209f", kill_on_drop: false }`
[INFO] [stderr]    Compiling ref_slice v1.2.0
[INFO] [stderr]    Compiling subprocess v0.1.20
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling pretty_env_logger v0.2.5
[INFO] [stderr]    Compiling fern v0.5.9
[INFO] [stderr]    Compiling cargo-frc v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.15s
[INFO] running `Command { std: "docker" "inspect" "440c245809e6c3deae255f37a46ac07e41b2101d06b5dd71ad761f704acf209f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "440c245809e6c3deae255f37a46ac07e41b2101d06b5dd71ad761f704acf209f", kill_on_drop: false }`
[INFO] [stdout] 440c245809e6c3deae255f37a46ac07e41b2101d06b5dd71ad761f704acf209f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] c13e9d8467f24d7299c3cf8c2d7fcfaac2029ca911f6d57a68edbb765f232567
[INFO] running `Command { std: "docker" "start" "-a" "c13e9d8467f24d7299c3cf8c2d7fcfaac2029ca911f6d57a68edbb765f232567", kill_on_drop: false }`
[INFO] [stderr]    Compiling cargo-frc v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "c13e9d8467f24d7299c3cf8c2d7fcfaac2029ca911f6d57a68edbb765f232567", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c13e9d8467f24d7299c3cf8c2d7fcfaac2029ca911f6d57a68edbb765f232567", kill_on_drop: false }`
[INFO] [stdout] c13e9d8467f24d7299c3cf8c2d7fcfaac2029ca911f6d57a68edbb765f232567
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 61f42c2772cd999b86d6a6408d567c3447582f30175d08bd172de065d7d6e465
[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" "61f42c2772cd999b86d6a6408d567c3447582f30175d08bd172de065d7d6e465", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cargo_frc-15413349d347bbc8
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "61f42c2772cd999b86d6a6408d567c3447582f30175d08bd172de065d7d6e465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61f42c2772cd999b86d6a6408d567c3447582f30175d08bd172de065d7d6e465", kill_on_drop: false }`
[INFO] [stdout] 61f42c2772cd999b86d6a6408d567c3447582f30175d08bd172de065d7d6e465