[INFO] fetching crate utf8-io 0.4.0...
[INFO] checking utf8-io-0.4.0 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] extracting crate utf8-io 0.4.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate utf8-io 0.4.0 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate utf8-io 0.4.0
[INFO] finished tweaking crates.io crate utf8-io 0.4.0
[INFO] tweaked toml for crates.io crate utf8-io 0.4.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate utf8-io 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded os_pipe v0.9.2
[INFO] [stderr]   Downloaded errno v0.2.7
[INFO] [stderr]   Downloaded errno-dragonfly v0.1.1
[INFO] [stderr]   Downloaded dirs-sys v0.3.5
[INFO] [stderr]   Downloaded terminfo v0.7.3
[INFO] [stderr]   Downloaded posish v0.6.0
[INFO] [stderr]   Downloaded duplex v0.3.0
[INFO] [stderr]   Downloaded terminal-io v0.3.0
[INFO] [stderr]   Downloaded layered-io v0.4.0
[INFO] [stderr]   Downloaded unsafe-io v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44fbeee1ff93671ea12b404955030bd48b26bdc2984701f97bca8c5d1b599e98
[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" "44fbeee1ff93671ea12b404955030bd48b26bdc2984701f97bca8c5d1b599e98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44fbeee1ff93671ea12b404955030bd48b26bdc2984701f97bca8c5d1b599e98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44fbeee1ff93671ea12b404955030bd48b26bdc2984701f97bca8c5d1b599e98", kill_on_drop: false }`
[INFO] [stdout] 44fbeee1ff93671ea12b404955030bd48b26bdc2984701f97bca8c5d1b599e98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84f7b25b0a7009bb4dfd4317b4f448516ab3a20602af197b24f49460bcf2e9cd
[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" "84f7b25b0a7009bb4dfd4317b4f448516ab3a20602af197b24f49460bcf2e9cd", kill_on_drop: false }`
[INFO] [stderr]     Checking duplex v0.3.0
[INFO] [stderr]     Checking os_pipe v0.9.2
[INFO] [stderr]     Checking anyhow v1.0.38
[INFO] [stderr]    Compiling unsafe-io v0.6.0
[INFO] [stderr]    Compiling layered-io v0.4.0
[INFO] [stderr]     Checking utf8-io v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "84f7b25b0a7009bb4dfd4317b4f448516ab3a20602af197b24f49460bcf2e9cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84f7b25b0a7009bb4dfd4317b4f448516ab3a20602af197b24f49460bcf2e9cd", kill_on_drop: false }`
[INFO] [stdout] 84f7b25b0a7009bb4dfd4317b4f448516ab3a20602af197b24f49460bcf2e9cd