[INFO] fetching crate access-unit 0.0.2...
[INFO] checking access-unit-0.0.2 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate access-unit 0.0.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate access-unit 0.0.2 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate access-unit 0.0.2
[INFO] finished tweaking crates.io crate access-unit 0.0.2
[INFO] tweaked toml for crates.io crate access-unit 0.0.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate access-unit 0.0.2 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded bytes v1.7.1
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ee2f36b313450f2537be31e850dcfe83a8bc632820052e993fd1834e79aab0d
[INFO] running `Command { std: "docker" "start" "-a" "5ee2f36b313450f2537be31e850dcfe83a8bc632820052e993fd1834e79aab0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ee2f36b313450f2537be31e850dcfe83a8bc632820052e993fd1834e79aab0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ee2f36b313450f2537be31e850dcfe83a8bc632820052e993fd1834e79aab0d", kill_on_drop: false }`
[INFO] [stdout] 5ee2f36b313450f2537be31e850dcfe83a8bc632820052e993fd1834e79aab0d
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f0a1c97fdbf8a931028be6ac865640c2fa3dc91124fc758b74232da4610691f
[INFO] running `Command { std: "docker" "start" "-a" "1f0a1c97fdbf8a931028be6ac865640c2fa3dc91124fc758b74232da4610691f", kill_on_drop: false }`
[INFO] [stderr]     Checking bytes v1.7.1
[INFO] [stderr]     Checking access-unit v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/flac.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 260 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::char::decode_utf16`
[INFO] [stdout]    --> src/flac.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 261 |     use std::char::decode_utf16;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::char::decode_utf16`
[INFO] [stdout]    --> src/flac.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 261 |     use std::char::decode_utf16;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_test_file` is never used
[INFO] [stdout]    --> src/flac.rs:265:8
[INFO] [stdout]     |
[INFO] [stdout] 265 |     fn read_test_file() -> Vec<u8> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "1f0a1c97fdbf8a931028be6ac865640c2fa3dc91124fc758b74232da4610691f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f0a1c97fdbf8a931028be6ac865640c2fa3dc91124fc758b74232da4610691f", kill_on_drop: false }`
[INFO] [stdout] 1f0a1c97fdbf8a931028be6ac865640c2fa3dc91124fc758b74232da4610691f