[INFO] fetching crate four-char-code 0.0.5...
[INFO] testing four-char-code-0.0.5 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate four-char-code 0.0.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate four-char-code 0.0.5 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate four-char-code 0.0.5
[INFO] finished tweaking crates.io crate four-char-code 0.0.5
[INFO] tweaked toml for crates.io crate four-char-code 0.0.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8709b8be367e996a8a99cee86887a229f3fe6a13a56cf96c6ae182c98889716
[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" "b8709b8be367e996a8a99cee86887a229f3fe6a13a56cf96c6ae182c98889716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8709b8be367e996a8a99cee86887a229f3fe6a13a56cf96c6ae182c98889716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8709b8be367e996a8a99cee86887a229f3fe6a13a56cf96c6ae182c98889716", kill_on_drop: false }`
[INFO] [stdout] b8709b8be367e996a8a99cee86887a229f3fe6a13a56cf96c6ae182c98889716
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 994c2d6781e984ec4b3b7a6d70e4a8adaf25287fc5edd360b5310fb4d5440585
[INFO] running `Command { std: "docker" "start" "-a" "994c2d6781e984ec4b3b7a6d70e4a8adaf25287fc5edd360b5310fb4d5440585", kill_on_drop: false }`
[INFO] [stderr]    Compiling four-char-code-macros-impl v0.0.2
[INFO] [stderr]    Compiling four-char-code v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.89s
[INFO] running `Command { std: "docker" "inspect" "994c2d6781e984ec4b3b7a6d70e4a8adaf25287fc5edd360b5310fb4d5440585", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "994c2d6781e984ec4b3b7a6d70e4a8adaf25287fc5edd360b5310fb4d5440585", kill_on_drop: false }`
[INFO] [stdout] 994c2d6781e984ec4b3b7a6d70e4a8adaf25287fc5edd360b5310fb4d5440585
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 351db441340108e441bd8ebda52ab2bbd869008eb4958d6a6cbbef67cff9bb8f
[INFO] running `Command { std: "docker" "start" "-a" "351db441340108e441bd8ebda52ab2bbd869008eb4958d6a6cbbef67cff9bb8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling four-char-code v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.00s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/four_char_code-7e1f53500c1d35be)
[INFO] running `Command { std: "docker" "inspect" "351db441340108e441bd8ebda52ab2bbd869008eb4958d6a6cbbef67cff9bb8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "351db441340108e441bd8ebda52ab2bbd869008eb4958d6a6cbbef67cff9bb8f", kill_on_drop: false }`
[INFO] [stdout] 351db441340108e441bd8ebda52ab2bbd869008eb4958d6a6cbbef67cff9bb8f
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] f5ceb637ac928b6f90a118b6a31039e1bf07e41c18c9b11c31034f63ecbcca5d
[INFO] running `Command { std: "docker" "start" "-a" "f5ceb637ac928b6f90a118b6a31039e1bf07e41c18c9b11c31034f63ecbcca5d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/four_char_code-7e1f53500c1d35be)
[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] [stderr]    Doc-tests four-char-code
[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" "f5ceb637ac928b6f90a118b6a31039e1bf07e41c18c9b11c31034f63ecbcca5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5ceb637ac928b6f90a118b6a31039e1bf07e41c18c9b11c31034f63ecbcca5d", kill_on_drop: false }`
[INFO] [stdout] f5ceb637ac928b6f90a118b6a31039e1bf07e41c18c9b11c31034f63ecbcca5d