[INFO] fetching crate fibers 0.1.13...
[INFO] checking fibers-0.1.13 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate fibers 0.1.13 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate fibers 0.1.13 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fibers 0.1.13
[INFO] finished tweaking crates.io crate fibers 0.1.13
[INFO] tweaked toml for crates.io crate fibers 0.1.13 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate fibers 0.1.13 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5cbca9a00ea401656f0ce4c90caa8715d14981788919fe79e132887ca7da75c
[INFO] running `Command { std: "docker" "start" "-a" "d5cbca9a00ea401656f0ce4c90caa8715d14981788919fe79e132887ca7da75c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5cbca9a00ea401656f0ce4c90caa8715d14981788919fe79e132887ca7da75c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5cbca9a00ea401656f0ce4c90caa8715d14981788919fe79e132887ca7da75c", kill_on_drop: false }`
[INFO] [stdout] d5cbca9a00ea401656f0ce4c90caa8715d14981788919fe79e132887ca7da75c
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c7fd480dc74ca97724ce5e47d5b55422593b4b63ff45369cdc5f3fd63113c9f
[INFO] running `Command { std: "docker" "start" "-a" "4c7fd480dc74ca97724ce5e47d5b55422593b4b63ff45369cdc5f3fd63113c9f", 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]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking handy_async v0.2.13
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking fibers v0.1.13 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `pollers`
[INFO] [stdout]   --> src/executor/thread_pool.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pollers: PollerPool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `links`
[INFO] [stdout]    --> src/executor/thread_pool.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 |     links: Vec<Link<(), io::Error>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pollers`
[INFO] [stdout]   --> src/executor/thread_pool.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pollers: PollerPool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `links`
[INFO] [stdout]    --> src/executor/thread_pool.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 |     links: Vec<Link<(), io::Error>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.94s
[INFO] running `Command { std: "docker" "inspect" "4c7fd480dc74ca97724ce5e47d5b55422593b4b63ff45369cdc5f3fd63113c9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c7fd480dc74ca97724ce5e47d5b55422593b4b63ff45369cdc5f3fd63113c9f", kill_on_drop: false }`
[INFO] [stdout] 4c7fd480dc74ca97724ce5e47d5b55422593b4b63ff45369cdc5f3fd63113c9f