[INFO] fetching crate willow-encoding 0.1.0...
[INFO] checking willow-encoding-0.1.0 against master#bbe853615821442ef11d6cd42a30a73432b38d89 for pr-154205
[INFO] extracting crate willow-encoding 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate willow-encoding 0.1.0
[INFO] finished tweaking crates.io crate willow-encoding 0.1.0
[INFO] tweaked toml for crates.io crate willow-encoding 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate willow-encoding 0.1.0 on toolchain bbe853615821442ef11d6cd42a30a73432b38d89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding ufotofu v0.4.3 (available: v0.11.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ufotofu_queues v0.5.0
[INFO] [stderr]   Downloaded wrapper v0.1.1
[INFO] [stderr]   Downloaded maybe-std v0.1.2
[INFO] [stderr]   Downloaded ufotofu v0.4.3
[INFO] [stderr]   Downloaded syncify v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdd9f038f240611b5bebaf8d039dfc2044bb3d75c3767564a5c92d93c411f342
[INFO] running `Command { std: "docker" "start" "-a" "cdd9f038f240611b5bebaf8d039dfc2044bb3d75c3767564a5c92d93c411f342", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdd9f038f240611b5bebaf8d039dfc2044bb3d75c3767564a5c92d93c411f342", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdd9f038f240611b5bebaf8d039dfc2044bb3d75c3767564a5c92d93c411f342", kill_on_drop: false }`
[INFO] [stdout] cdd9f038f240611b5bebaf8d039dfc2044bb3d75c3767564a5c92d93c411f342
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37ac9534381c8ee6ef456d1220b5f59eccd2097ed622cadc699c849cd3f54cc2
[INFO] running `Command { std: "docker" "start" "-a" "37ac9534381c8ee6ef456d1220b5f59eccd2097ed622cadc699c849cd3f54cc2", kill_on_drop: false }`
[INFO] [stderr]     Checking maybe-std v0.1.2
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking ufotofu_queues v0.5.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking wrapper v0.1.1
[INFO] [stderr]     Checking ufotofu v0.4.3
[INFO] [stderr]    Compiling syncify v0.1.0
[INFO] [stderr]     Checking willow-encoding v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `syncify::syncify_replace`
[INFO] [stdout]  --> src/bytes.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     use syncify::syncify_replace;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syncify::syncify_replace`
[INFO] [stdout]  --> src/bytes.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     use syncify::syncify_replace;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.92s
[INFO] running `Command { std: "docker" "inspect" "37ac9534381c8ee6ef456d1220b5f59eccd2097ed622cadc699c849cd3f54cc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37ac9534381c8ee6ef456d1220b5f59eccd2097ed622cadc699c849cd3f54cc2", kill_on_drop: false }`
[INFO] [stdout] 37ac9534381c8ee6ef456d1220b5f59eccd2097ed622cadc699c849cd3f54cc2