[INFO] fetching crate libarena 0.1.6...
[INFO] testing libarena-0.1.6 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate libarena 0.1.6 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate libarena 0.1.6 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 libarena 0.1.6
[INFO] finished tweaking crates.io crate libarena 0.1.6
[INFO] tweaked toml for crates.io crate libarena 0.1.6 written to /workspace/builds/worker-43/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--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-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b7e9ae4e3ddc22422559222c1d4eea4fe1d7e3b8f2051f9cb082c7051516b97
[INFO] running `Command { std: "docker" "start" "-a" "9b7e9ae4e3ddc22422559222c1d4eea4fe1d7e3b8f2051f9cb082c7051516b97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b7e9ae4e3ddc22422559222c1d4eea4fe1d7e3b8f2051f9cb082c7051516b97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b7e9ae4e3ddc22422559222c1d4eea4fe1d7e3b8f2051f9cb082c7051516b97", kill_on_drop: false }`
[INFO] [stdout] 9b7e9ae4e3ddc22422559222c1d4eea4fe1d7e3b8f2051f9cb082c7051516b97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21c7a2e8148b246032fc82e250ac385ac81f184710f36f6e09f0c1a285dd32a5
[INFO] running `Command { std: "docker" "start" "-a" "21c7a2e8148b246032fc82e250ac385ac81f184710f36f6e09f0c1a285dd32a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling libarena v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.17s
[INFO] running `Command { std: "docker" "inspect" "21c7a2e8148b246032fc82e250ac385ac81f184710f36f6e09f0c1a285dd32a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21c7a2e8148b246032fc82e250ac385ac81f184710f36f6e09f0c1a285dd32a5", kill_on_drop: false }`
[INFO] [stdout] 21c7a2e8148b246032fc82e250ac385ac81f184710f36f6e09f0c1a285dd32a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb33ece9ee418b3a6c5ab6bd74b5d624820ed8f42fa838da3f9df29df8bbdb53
[INFO] running `Command { std: "docker" "start" "-a" "bb33ece9ee418b3a6c5ab6bd74b5d624820ed8f42fa838da3f9df29df8bbdb53", kill_on_drop: false }`
[INFO] [stderr]    Compiling libarena v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.92s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/libarena-1d89ec118ea42dd4)
[INFO] running `Command { std: "docker" "inspect" "bb33ece9ee418b3a6c5ab6bd74b5d624820ed8f42fa838da3f9df29df8bbdb53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb33ece9ee418b3a6c5ab6bd74b5d624820ed8f42fa838da3f9df29df8bbdb53", kill_on_drop: false }`
[INFO] [stdout] bb33ece9ee418b3a6c5ab6bd74b5d624820ed8f42fa838da3f9df29df8bbdb53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8486da9af32d9683bd6854a775d942456f077b770ca8f3673110bd4e8eb0f268
[INFO] running `Command { std: "docker" "start" "-a" "8486da9af32d9683bd6854a775d942456f077b770ca8f3673110bd4e8eb0f268", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/libarena-1d89ec118ea42dd4)
[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 libarena
[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" "8486da9af32d9683bd6854a775d942456f077b770ca8f3673110bd4e8eb0f268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8486da9af32d9683bd6854a775d942456f077b770ca8f3673110bd4e8eb0f268", kill_on_drop: false }`
[INFO] [stdout] 8486da9af32d9683bd6854a775d942456f077b770ca8f3673110bd4e8eb0f268