[INFO] fetching crate os-sync 0.3.3...
[INFO] checking os-sync-0.3.3 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate os-sync 0.3.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate os-sync 0.3.3 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate os-sync 0.3.3
[INFO] finished tweaking crates.io crate os-sync 0.3.3
[INFO] tweaked toml for crates.io crate os-sync 0.3.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "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" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf62b94f9df4f25d47e1a28ace48090bae3cc829a1266cd857186003ff2fc333
[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" "bf62b94f9df4f25d47e1a28ace48090bae3cc829a1266cd857186003ff2fc333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf62b94f9df4f25d47e1a28ace48090bae3cc829a1266cd857186003ff2fc333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf62b94f9df4f25d47e1a28ace48090bae3cc829a1266cd857186003ff2fc333", kill_on_drop: false }`
[INFO] [stdout] bf62b94f9df4f25d47e1a28ace48090bae3cc829a1266cd857186003ff2fc333
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65b866416772f232aa2353c18e39098c0668f51eb4483e0681c3849aa7c17061
[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" "65b866416772f232aa2353c18e39098c0668f51eb4483e0681c3849aa7c17061", kill_on_drop: false }`
[INFO] [stderr]     Checking str-buf v1.0.2
[INFO] [stderr]     Checking error-code v2.0.0
[INFO] [stderr]     Checking os-sync v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::convert::TryFrom`
[INFO] [stdout]  --> src/sem/posix.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::convert::TryFrom`
[INFO] [stdout]  --> src/sem/posix.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "65b866416772f232aa2353c18e39098c0668f51eb4483e0681c3849aa7c17061", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65b866416772f232aa2353c18e39098c0668f51eb4483e0681c3849aa7c17061", kill_on_drop: false }`
[INFO] [stdout] 65b866416772f232aa2353c18e39098c0668f51eb4483e0681c3849aa7c17061
