[INFO] fetching crate krata-loopdev 0.0.21...
[INFO] checking krata-loopdev-0.0.21 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate krata-loopdev 0.0.21 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate krata-loopdev 0.0.21
[INFO] finished tweaking crates.io crate krata-loopdev 0.0.21
[INFO] tweaked toml for crates.io crate krata-loopdev 0.0.21 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate krata-loopdev 0.0.21 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 723849f095a1ebe06b9d345011802dce6117f95f6159af607e75b9284ae1bc3a
[INFO] running `Command { std: "docker" "start" "-a" "723849f095a1ebe06b9d345011802dce6117f95f6159af607e75b9284ae1bc3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "723849f095a1ebe06b9d345011802dce6117f95f6159af607e75b9284ae1bc3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "723849f095a1ebe06b9d345011802dce6117f95f6159af607e75b9284ae1bc3a", kill_on_drop: false }`
[INFO] [stdout] 723849f095a1ebe06b9d345011802dce6117f95f6159af607e75b9284ae1bc3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2a9515e4a930bc20b3a741bf56660fbe28f10d2c999bb53dfdbf6627d4aca66
[INFO] running `Command { std: "docker" "start" "-a" "a2a9515e4a930bc20b3a741bf56660fbe28f10d2c999bb53dfdbf6627d4aca66", kill_on_drop: false }`
[INFO] [stderr]     Checking krata-loopdev v0.0.21 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:225:22
[INFO] [stdout]     |
[INFO] [stdout] 225 |             .map(|m| unsafe { libc::major(m.rdev()) })
[INFO] [stdout]     |                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:232:22
[INFO] [stdout]     |
[INFO] [stdout] 232 |             .map(|m| unsafe { libc::minor(m.rdev()) })
[INFO] [stdout]     |                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:225:22
[INFO] [stdout]     |
[INFO] [stdout] 225 |             .map(|m| unsafe { libc::major(m.rdev()) })
[INFO] [stdout]     |                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:232:22
[INFO] [stdout]     |
[INFO] [stdout] 232 |             .map(|m| unsafe { libc::minor(m.rdev()) })
[INFO] [stdout]     |                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "a2a9515e4a930bc20b3a741bf56660fbe28f10d2c999bb53dfdbf6627d4aca66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2a9515e4a930bc20b3a741bf56660fbe28f10d2c999bb53dfdbf6627d4aca66", kill_on_drop: false }`
[INFO] [stdout] a2a9515e4a930bc20b3a741bf56660fbe28f10d2c999bb53dfdbf6627d4aca66