[INFO] fetching crate fixed-size-buf 1.1.2...
[INFO] checking fixed-size-buf-1.1.2 against master#4455c8937007f3cc3c078375a335d86dbab391ce for pr-140956
[INFO] extracting crate fixed-size-buf 1.1.2 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate fixed-size-buf 1.1.2
[INFO] finished tweaking crates.io crate fixed-size-buf 1.1.2
[INFO] tweaked toml for crates.io crate fixed-size-buf 1.1.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fixed-size-buf 1.1.2 on toolchain 4455c8937007f3cc3c078375a335d86dbab391ce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4455c8937007f3cc3c078375a335d86dbab391ce" "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" "+4455c8937007f3cc3c078375a335d86dbab391ce" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 33 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4455c8937007f3cc3c078375a335d86dbab391ce" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+4455c8937007f3cc3c078375a335d86dbab391ce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 972fa6cb110365ae53287e3762de6b5975e6ee350f2bb6d2d5f3f690653cbda5
[INFO] running `Command { std: "docker" "start" "-a" "972fa6cb110365ae53287e3762de6b5975e6ee350f2bb6d2d5f3f690653cbda5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "972fa6cb110365ae53287e3762de6b5975e6ee350f2bb6d2d5f3f690653cbda5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "972fa6cb110365ae53287e3762de6b5975e6ee350f2bb6d2d5f3f690653cbda5", kill_on_drop: false }`
[INFO] [stdout] 972fa6cb110365ae53287e3762de6b5975e6ee350f2bb6d2d5f3f690653cbda5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+4455c8937007f3cc3c078375a335d86dbab391ce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 893755cb74deb0db4591444a0f2299c18aa9c7cf8421cd4957cf8e0ffb36a896
[INFO] running `Command { std: "docker" "start" "-a" "893755cb74deb0db4591444a0f2299c18aa9c7cf8421cd4957cf8e0ffb36a896", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.31
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]     Checking slab v0.4.10
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking oneshot v0.1.11
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking fixed-size-buf v1.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/backing_buffer.rs:19:26
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<Inner, const BLOCKS: usize, const SIZE: usize> BackingBuffer<Inner, BLOCKS, SIZE> {
[INFO] [stdout]    | -------------------------------------------------------------------------------------- associated function in this implementation
[INFO] [stdout] 19 |     pub(crate) unsafe fn new(inner: Inner) -> Self {
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking memmap2 v0.9.5
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stdout] warning: unused import: `io::Write`
[INFO] [stdout]    --> src/lib.rs:174:15
[INFO] [stdout]     |
[INFO] [stdout] 174 |     use std::{io::Write, thread, time::Duration};
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tempdir::TempDir`
[INFO] [stdout]    --> src/lib.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |     use tempdir::TempDir;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/backing_buffer.rs:19:26
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<Inner, const BLOCKS: usize, const SIZE: usize> BackingBuffer<Inner, BLOCKS, SIZE> {
[INFO] [stdout]    | -------------------------------------------------------------------------------------- associated function in this implementation
[INFO] [stdout] 19 |     pub(crate) unsafe fn new(inner: Inner) -> 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 10.67s
[INFO] running `Command { std: "docker" "inspect" "893755cb74deb0db4591444a0f2299c18aa9c7cf8421cd4957cf8e0ffb36a896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "893755cb74deb0db4591444a0f2299c18aa9c7cf8421cd4957cf8e0ffb36a896", kill_on_drop: false }`
[INFO] [stdout] 893755cb74deb0db4591444a0f2299c18aa9c7cf8421cd4957cf8e0ffb36a896