[INFO] fetching crate ringbuffer 0.16.0...
[INFO] checking ringbuffer-0.16.0 against 1.95.0 for pr-155915
[INFO] extracting crate ringbuffer 0.16.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate ringbuffer 0.16.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ringbuffer 0.16.0
[INFO] tweaked toml for crates.io crate ringbuffer 0.16.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ringbuffer 0.16.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ringbuffer 0.16.0 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustfix v0.6.1
[INFO] [stderr]   Downloaded compiletest_rs v0.10.2
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a79ab349e918f67a45786728336bacc117050db261222c644f7cd26a571e928
[INFO] running `Command { std: "docker" "start" "-a" "5a79ab349e918f67a45786728336bacc117050db261222c644f7cd26a571e928", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a79ab349e918f67a45786728336bacc117050db261222c644f7cd26a571e928", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a79ab349e918f67a45786728336bacc117050db261222c644f7cd26a571e928", kill_on_drop: false }`
[INFO] [stdout] 5a79ab349e918f67a45786728336bacc117050db261222c644f7cd26a571e928
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b17543ded25c5430e74381faccf560ac1d963ac64b8a0add5566cb184e554f9e
[INFO] running `Command { std: "docker" "start" "-a" "b17543ded25c5430e74381faccf560ac1d963ac64b8a0add5566cb184e554f9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking half v2.6.0
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]    Compiling compiletest_rs v0.10.2
[INFO] [stderr]     Checking textwrap v0.16.2
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking filetime v0.2.25
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking ringbuffer v0.16.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tester v0.9.1
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking rustfix v0.6.1
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/bench.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(coverage_attribute)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ringbuffer` (bench "bench") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b17543ded25c5430e74381faccf560ac1d963ac64b8a0add5566cb184e554f9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b17543ded25c5430e74381faccf560ac1d963ac64b8a0add5566cb184e554f9e", kill_on_drop: false }`
[INFO] [stdout] b17543ded25c5430e74381faccf560ac1d963ac64b8a0add5566cb184e554f9e
