[INFO] fetching crate perm 0.9.3...
[INFO] checking perm-0.9.3 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate perm 0.9.3 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate perm 0.9.3
[INFO] finished tweaking crates.io crate perm 0.9.3
[INFO] tweaked toml for crates.io crate perm 0.9.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate perm 0.9.3 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3ef1f1c87af7076c30652f394734ce84e2f070243a91bb6a6bf9b8a74c8fa3b5
[INFO] running `Command { std: "docker" "start" "-a" "3ef1f1c87af7076c30652f394734ce84e2f070243a91bb6a6bf9b8a74c8fa3b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ef1f1c87af7076c30652f394734ce84e2f070243a91bb6a6bf9b8a74c8fa3b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ef1f1c87af7076c30652f394734ce84e2f070243a91bb6a6bf9b8a74c8fa3b5", kill_on_drop: false }`
[INFO] [stdout] 3ef1f1c87af7076c30652f394734ce84e2f070243a91bb6a6bf9b8a74c8fa3b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 97fad34726db337c2ef636b6bf7931336d1cd393cb2885be718a96e307ddfb45
[INFO] running `Command { std: "docker" "start" "-a" "97fad34726db337c2ef636b6bf7931336d1cd393cb2885be718a96e307ddfb45", kill_on_drop: false }`
[INFO] [stderr]     Checking perm v0.9.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/error.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Error {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub (crate) const fn new(line: u32, module_path: &'static str, msg: Option<Cow<'static, str>>) -> Self {
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> tests/perm_iter.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     format!("{:?}", PermIter::new(vec![0_u8..=1, 0..=2, 0..=0], &buffer));
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let _ = format!("{:?}", PermIter::new(vec![0_u8..=1, 0..=2, 0..=0], &buffer));
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/error.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Error {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub (crate) const fn new(line: u32, module_path: &'static str, msg: Option<Cow<'static, str>>) -> Self {
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "97fad34726db337c2ef636b6bf7931336d1cd393cb2885be718a96e307ddfb45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97fad34726db337c2ef636b6bf7931336d1cd393cb2885be718a96e307ddfb45", kill_on_drop: false }`
[INFO] [stdout] 97fad34726db337c2ef636b6bf7931336d1cd393cb2885be718a96e307ddfb45