[INFO] fetching crate cachedir 0.3.0...
[INFO] testing cachedir-0.3.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate cachedir 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate cachedir 0.3.0 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 cachedir 0.3.0
[INFO] finished tweaking crates.io crate cachedir 0.3.0
[INFO] tweaked toml for crates.io crate cachedir 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate cachedir 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 6dfa4b7f90f4a7ed820a5d4ab5af15426b26b909d9790ae519ba8de70f660754
[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" "6dfa4b7f90f4a7ed820a5d4ab5af15426b26b909d9790ae519ba8de70f660754", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dfa4b7f90f4a7ed820a5d4ab5af15426b26b909d9790ae519ba8de70f660754", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dfa4b7f90f4a7ed820a5d4ab5af15426b26b909d9790ae519ba8de70f660754", kill_on_drop: false }`
[INFO] [stdout] 6dfa4b7f90f4a7ed820a5d4ab5af15426b26b909d9790ae519ba8de70f660754
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] d8d92d8b06927a3e8c503b98d3042d6f9e18625387c837a1d8f35172fa10a00a
[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" "d8d92d8b06927a3e8c503b98d3042d6f9e18625387c837a1d8f35172fa10a00a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling cachedir v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.47s
[INFO] running `Command { std: "docker" "inspect" "d8d92d8b06927a3e8c503b98d3042d6f9e18625387c837a1d8f35172fa10a00a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8d92d8b06927a3e8c503b98d3042d6f9e18625387c837a1d8f35172fa10a00a", kill_on_drop: false }`
[INFO] [stdout] d8d92d8b06927a3e8c503b98d3042d6f9e18625387c837a1d8f35172fa10a00a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stdout] e9af35e5ff11eb585d86a87fc433e87da49f144e369514e664ae94597584a67c
[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" "e9af35e5ff11eb585d86a87fc433e87da49f144e369514e664ae94597584a67c", kill_on_drop: false }`
[INFO] [stderr]    Compiling cachedir v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `thread`
[INFO] [stdout]    --> src/lib.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |         thread::spawn(move || mkdir_atomic(cache))
[INFO] [stdout]     |         ^^^^^^ use of undeclared crate or module `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cachedir`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e9af35e5ff11eb585d86a87fc433e87da49f144e369514e664ae94597584a67c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9af35e5ff11eb585d86a87fc433e87da49f144e369514e664ae94597584a67c", kill_on_drop: false }`
[INFO] [stdout] e9af35e5ff11eb585d86a87fc433e87da49f144e369514e664ae94597584a67c