[INFO] fetching crate swift-std 0.0.0...
[INFO] testing swift-std-0.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate swift-std 0.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate swift-std 0.0.0 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 swift-std 0.0.0
[INFO] finished tweaking crates.io crate swift-std 0.0.0
[INFO] tweaked toml for crates.io crate swift-std 0.0.0 written to /workspace/builds/worker-8/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] [stderr]     Blocking waiting for file lock on package cache
[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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 7eedab3e909a6e5c7f7f11987baa0ded68e547c825fa52a35bd502af07c8bd4e
[INFO] running `Command { std: "docker" "start" "-a" "7eedab3e909a6e5c7f7f11987baa0ded68e547c825fa52a35bd502af07c8bd4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7eedab3e909a6e5c7f7f11987baa0ded68e547c825fa52a35bd502af07c8bd4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7eedab3e909a6e5c7f7f11987baa0ded68e547c825fa52a35bd502af07c8bd4e", kill_on_drop: false }`
[INFO] [stdout] 7eedab3e909a6e5c7f7f11987baa0ded68e547c825fa52a35bd502af07c8bd4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 319a0f7a492c95f55194d95229afc61b9e5ba50255dbf95baefa2dd694ff3eec
[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" "319a0f7a492c95f55194d95229afc61b9e5ba50255dbf95baefa2dd694ff3eec", kill_on_drop: false }`
[INFO] [stderr]    Compiling swift-bindgen v0.0.0
[INFO] [stderr]    Compiling swift-rt v0.0.0
[INFO] [stderr]    Compiling swift-sys v0.0.0
[INFO] [stderr]    Compiling swift-std v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "319a0f7a492c95f55194d95229afc61b9e5ba50255dbf95baefa2dd694ff3eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "319a0f7a492c95f55194d95229afc61b9e5ba50255dbf95baefa2dd694ff3eec", kill_on_drop: false }`
[INFO] [stdout] 319a0f7a492c95f55194d95229afc61b9e5ba50255dbf95baefa2dd694ff3eec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] cd36df566d2a65e0b657e738f140e82e2b5704cbd05bdb2e00e0553b1652921c
[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" "cd36df566d2a65e0b657e738f140e82e2b5704cbd05bdb2e00e0553b1652921c", kill_on_drop: false }`
[INFO] [stderr]    Compiling swift-std v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "cd36df566d2a65e0b657e738f140e82e2b5704cbd05bdb2e00e0553b1652921c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd36df566d2a65e0b657e738f140e82e2b5704cbd05bdb2e00e0553b1652921c", kill_on_drop: false }`
[INFO] [stdout] cd36df566d2a65e0b657e738f140e82e2b5704cbd05bdb2e00e0553b1652921c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] fc9f6ed0f12643e3ec504e9f47a42b5bb183828672983b68c8f45da187687abb
[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" "fc9f6ed0f12643e3ec504e9f47a42b5bb183828672983b68c8f45da187687abb", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/swift_std-e9bcdd0fe68315db
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests swift-std
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fc9f6ed0f12643e3ec504e9f47a42b5bb183828672983b68c8f45da187687abb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc9f6ed0f12643e3ec504e9f47a42b5bb183828672983b68c8f45da187687abb", kill_on_drop: false }`
[INFO] [stdout] fc9f6ed0f12643e3ec504e9f47a42b5bb183828672983b68c8f45da187687abb