[INFO] fetching crate weblab-assignment-structure 0.2.5...
[INFO] testing weblab-assignment-structure-0.2.5 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate weblab-assignment-structure 0.2.5 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate weblab-assignment-structure 0.2.5 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 weblab-assignment-structure 0.2.5
[INFO] finished tweaking crates.io crate weblab-assignment-structure 0.2.5
[INFO] tweaked toml for crates.io crate weblab-assignment-structure 0.2.5 written to /workspace/builds/worker-1/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ef9798be0b94ad9ee923ae05e07462b6502076f037b81979d463979b79f21dea
[INFO] running `Command { std: "docker" "start" "-a" "ef9798be0b94ad9ee923ae05e07462b6502076f037b81979d463979b79f21dea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef9798be0b94ad9ee923ae05e07462b6502076f037b81979d463979b79f21dea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef9798be0b94ad9ee923ae05e07462b6502076f037b81979d463979b79f21dea", kill_on_drop: false }`
[INFO] [stdout] ef9798be0b94ad9ee923ae05e07462b6502076f037b81979d463979b79f21dea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stdout] 991672291af2b570a71f0d69f4d11a5a21c64f9b93dfe99c3d4dd1582116604e
[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" "991672291af2b570a71f0d69f4d11a5a21c64f9b93dfe99c3d4dd1582116604e", kill_on_drop: false }`
[INFO] [stderr]    Compiling weblab-assignment-structure v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "991672291af2b570a71f0d69f4d11a5a21c64f9b93dfe99c3d4dd1582116604e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "991672291af2b570a71f0d69f4d11a5a21c64f9b93dfe99c3d4dd1582116604e", kill_on_drop: false }`
[INFO] [stdout] 991672291af2b570a71f0d69f4d11a5a21c64f9b93dfe99c3d4dd1582116604e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stdout] bab3898134c78c396457ab5dc4a17300ff9897cdbe67c88a5cc78c49089e1ce1
[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" "bab3898134c78c396457ab5dc4a17300ff9897cdbe67c88a5cc78c49089e1ce1", kill_on_drop: false }`
[INFO] [stderr]    Compiling weblab-assignment-structure v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.76s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/weblab_assignment_structure-369cd8c7b5a45080)
[INFO] running `Command { std: "docker" "inspect" "bab3898134c78c396457ab5dc4a17300ff9897cdbe67c88a5cc78c49089e1ce1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bab3898134c78c396457ab5dc4a17300ff9897cdbe67c88a5cc78c49089e1ce1", kill_on_drop: false }`
[INFO] [stdout] bab3898134c78c396457ab5dc4a17300ff9897cdbe67c88a5cc78c49089e1ce1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 12d922b6cf29b585386b15f76eb60b74549f6752cfc152b87d3ed0a45a6a7a2c
[INFO] running `Command { std: "docker" "start" "-a" "12d922b6cf29b585386b15f76eb60b74549f6752cfc152b87d3ed0a45a6a7a2c", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/weblab_assignment_structure-369cd8c7b5a45080)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests weblab-assignment-structure
[INFO] [stdout] test result: ok. 0 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" "12d922b6cf29b585386b15f76eb60b74549f6752cfc152b87d3ed0a45a6a7a2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12d922b6cf29b585386b15f76eb60b74549f6752cfc152b87d3ed0a45a6a7a2c", kill_on_drop: false }`
[INFO] [stdout] 12d922b6cf29b585386b15f76eb60b74549f6752cfc152b87d3ed0a45a6a7a2c