[INFO] fetching crate mio_wasi 0.8.9...
[INFO] checking mio_wasi-0.8.9 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate mio_wasi 0.8.9 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate mio_wasi 0.8.9
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mio_wasi 0.8.9
[INFO] tweaked toml for crates.io crate mio_wasi 0.8.9 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mio_wasi 0.8.9 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mio_wasi 0.8.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasmedge_wasi_socket v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09bfa8a53965f5c876aa17e4c7b6c9f2f7cc36ef7e76a90683c5344bc591f4d7
[INFO] running `Command { std: "docker" "start" "-a" "09bfa8a53965f5c876aa17e4c7b6c9f2f7cc36ef7e76a90683c5344bc591f4d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09bfa8a53965f5c876aa17e4c7b6c9f2f7cc36ef7e76a90683c5344bc591f4d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09bfa8a53965f5c876aa17e4c7b6c9f2f7cc36ef7e76a90683c5344bc591f4d7", kill_on_drop: false }`
[INFO] [stdout] 09bfa8a53965f5c876aa17e4c7b6c9f2f7cc36ef7e76a90683c5344bc591f4d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0ff441a4a059f0d76c2f862edfaae98f25f52137c4cae00fbac978540038a84
[INFO] running `Command { std: "docker" "start" "-a" "e0ff441a4a059f0d76c2f862edfaae98f25f52137c4cae00fbac978540038a84", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking env_logger v0.9.3
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking mio_wasi v0.8.9 (/opt/rustwide/workdir)
[INFO] [stdout] error: unused import: `self::sourcefd::SourceFd`
[INFO] [stdout]   --> src/sys/unix/mod.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub use self::sourcefd::SourceFd;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout]  5 |     unused_imports,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stdout] error: struct `SourceFd` is never constructed
[INFO] [stdout]   --> src/sys/unix/sourcefd.rs:92:12
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub struct SourceFd<'a>(pub &'a RawFd);
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout]  6 |     dead_code
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mio_wasi` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e0ff441a4a059f0d76c2f862edfaae98f25f52137c4cae00fbac978540038a84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0ff441a4a059f0d76c2f862edfaae98f25f52137c4cae00fbac978540038a84", kill_on_drop: false }`
[INFO] [stdout] e0ff441a4a059f0d76c2f862edfaae98f25f52137c4cae00fbac978540038a84