[INFO] fetching crate waitcell 0.3.0...
[INFO] testing waitcell-0.3.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate waitcell 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate waitcell 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 waitcell 0.3.0
[INFO] finished tweaking crates.io crate waitcell 0.3.0
[INFO] tweaked toml for crates.io crate waitcell 0.3.0 written to /workspace/builds/worker-2/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] 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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 20dfe4eb4b2b9bdfe2b000926a4e4a5872cd11bc0f5ca1127301db36315eca95
[INFO] running `Command { std: "docker" "start" "-a" "20dfe4eb4b2b9bdfe2b000926a4e4a5872cd11bc0f5ca1127301db36315eca95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20dfe4eb4b2b9bdfe2b000926a4e4a5872cd11bc0f5ca1127301db36315eca95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20dfe4eb4b2b9bdfe2b000926a4e4a5872cd11bc0f5ca1127301db36315eca95", kill_on_drop: false }`
[INFO] [stdout] 20dfe4eb4b2b9bdfe2b000926a4e4a5872cd11bc0f5ca1127301db36315eca95
[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] 1d6db9a2edd099d979287976e78ce29ae99684ddc0d889a7e80acf2fa5062ae7
[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" "1d6db9a2edd099d979287976e78ce29ae99684ddc0d889a7e80acf2fa5062ae7", kill_on_drop: false }`
[INFO] [stderr]    Compiling waitcell v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "1d6db9a2edd099d979287976e78ce29ae99684ddc0d889a7e80acf2fa5062ae7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d6db9a2edd099d979287976e78ce29ae99684ddc0d889a7e80acf2fa5062ae7", kill_on_drop: false }`
[INFO] [stdout] 1d6db9a2edd099d979287976e78ce29ae99684ddc0d889a7e80acf2fa5062ae7
[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] 8c5f1425bf76fbd6a1bb01669e55e4af33b3d319aab852b5e9e85d401f0d74b5
[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" "8c5f1425bf76fbd6a1bb01669e55e4af33b3d319aab852b5e9e85d401f0d74b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling waitcell v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "8c5f1425bf76fbd6a1bb01669e55e4af33b3d319aab852b5e9e85d401f0d74b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c5f1425bf76fbd6a1bb01669e55e4af33b3d319aab852b5e9e85d401f0d74b5", kill_on_drop: false }`
[INFO] [stdout] 8c5f1425bf76fbd6a1bb01669e55e4af33b3d319aab852b5e9e85d401f0d74b5
[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", kill_on_drop: false }`
[INFO] [stdout] 20697dd540b713e580c1f6553b9386fe7c112c32e5f2473c227f394ed43a3637
[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" "20697dd540b713e580c1f6553b9386fe7c112c32e5f2473c227f394ed43a3637", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/waitcell-02a5caf92cc84143
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::init_twice ... ok
[INFO] [stdout] test tests::uninit_init ... ok
[INFO] [stdout] test tests::init_try_get ... ok
[INFO] [stdout] test tests::uninit_try_get ... ok
[INFO] [stdout] test tests::stress ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests waitcell
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 19) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "20697dd540b713e580c1f6553b9386fe7c112c32e5f2473c227f394ed43a3637", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20697dd540b713e580c1f6553b9386fe7c112c32e5f2473c227f394ed43a3637", kill_on_drop: false }`
[INFO] [stdout] 20697dd540b713e580c1f6553b9386fe7c112c32e5f2473c227f394ed43a3637