[INFO] fetching crate sysfs-rs 0.0.12...
[INFO] testing sysfs-rs-0.0.12 against 1.55.0 for beta-1.56-1
[INFO] extracting crate sysfs-rs 0.0.12 into /workspace/builds/worker-34/source
[INFO] validating manifest of crates.io crate sysfs-rs 0.0.12 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sysfs-rs 0.0.12
[INFO] finished tweaking crates.io crate sysfs-rs 0.0.12
[INFO] tweaked toml for crates.io crate sysfs-rs 0.0.12 written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1205d5a28c879844ffc8c54aa4135d5ddad5098db4a1e7418ee26c17ae376a12
[INFO] running `Command { std: "docker" "start" "-a" "1205d5a28c879844ffc8c54aa4135d5ddad5098db4a1e7418ee26c17ae376a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1205d5a28c879844ffc8c54aa4135d5ddad5098db4a1e7418ee26c17ae376a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1205d5a28c879844ffc8c54aa4135d5ddad5098db4a1e7418ee26c17ae376a12", kill_on_drop: false }`
[INFO] [stdout] 1205d5a28c879844ffc8c54aa4135d5ddad5098db4a1e7418ee26c17ae376a12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80052b52d62314e0741f1b4f78a0e0fe72c9106afaa3df15ba3b1bdde5b5444c
[INFO] running `Command { std: "docker" "start" "-a" "80052b52d62314e0741f1b4f78a0e0fe72c9106afaa3df15ba3b1bdde5b5444c", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling sysfs-rs v0.0.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `core::str::<impl str>::trim` that must be used
[INFO] [stdout]   --> src/util.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 s.trim();
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this returns the trimmed string as a slice, without modifying the original
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "80052b52d62314e0741f1b4f78a0e0fe72c9106afaa3df15ba3b1bdde5b5444c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80052b52d62314e0741f1b4f78a0e0fe72c9106afaa3df15ba3b1bdde5b5444c", kill_on_drop: false }`
[INFO] [stdout] 80052b52d62314e0741f1b4f78a0e0fe72c9106afaa3df15ba3b1bdde5b5444c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c13522495481532be566b8a7bac995a1d63beb8fe03fdc4c98fc024c09b503cd
[INFO] running `Command { std: "docker" "start" "-a" "c13522495481532be566b8a7bac995a1d63beb8fe03fdc4c98fc024c09b503cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling sysfs-rs v0.0.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `core::str::<impl str>::trim` that must be used
[INFO] [stdout]   --> src/util.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 s.trim();
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this returns the trimmed string as a slice, without modifying the original
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::str::<impl str>::trim` that must be used
[INFO] [stdout]   --> src/util.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 s.trim();
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this returns the trimmed string as a slice, without modifying the original
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "c13522495481532be566b8a7bac995a1d63beb8fe03fdc4c98fc024c09b503cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c13522495481532be566b8a7bac995a1d63beb8fe03fdc4c98fc024c09b503cd", kill_on_drop: false }`
[INFO] [stdout] c13522495481532be566b8a7bac995a1d63beb8fe03fdc4c98fc024c09b503cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 792408ad0ebfb3b4e3c1139bfc26f35dfdab3d7d23f4653c15863fff641ab6c4
[INFO] running `Command { std: "docker" "start" "-a" "792408ad0ebfb3b4e3c1139bfc26f35dfdab3d7d23f4653c15863fff641ab6c4", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `core::str::<impl str>::trim` that must be used
[INFO] [stderr]   --> src/util.rs:26:17
[INFO] [stderr]    |
[INFO] [stderr] 26 |                 s.trim();
[INFO] [stderr]    |                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this returns the trimmed string as a slice, without modifying the original
[INFO] [stderr] 
[INFO] [stderr] warning: `sysfs-rs` (lib) generated 1 warning
[INFO] [stderr] warning: `sysfs-rs` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sysfs_rs-318e3951fddbc92e)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sysfs-rs
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "792408ad0ebfb3b4e3c1139bfc26f35dfdab3d7d23f4653c15863fff641ab6c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "792408ad0ebfb3b4e3c1139bfc26f35dfdab3d7d23f4653c15863fff641ab6c4", kill_on_drop: false }`
[INFO] [stdout] 792408ad0ebfb3b4e3c1139bfc26f35dfdab3d7d23f4653c15863fff641ab6c4