[INFO] fetching crate smoltcp 0.13.1...
[INFO] checking smoltcp-0.13.1 against 1.95.0 for pr-155915
[INFO] extracting crate smoltcp 0.13.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate smoltcp 0.13.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate smoltcp 0.13.1
[INFO] tweaked toml for crates.io crate smoltcp 0.13.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate smoltcp 0.13.1 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 smoltcp 0.13.1 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded defmt v0.3.100
[INFO] [stderr]   Downloaded managed v0.8.0
[INFO] [stderr]   Downloaded rstest v0.17.0
[INFO] [stderr]   Downloaded rstest_macros v0.17.0
[INFO] [stderr]   Downloaded insta v1.46.1
[INFO] [stderr]   Downloaded idna v1.0.1
[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] 6d1ad94e62cb92c02f0fb400ce51f27e8f6297bcc6407bddf5571fb23a3baf04
[INFO] running `Command { std: "docker" "start" "-a" "6d1ad94e62cb92c02f0fb400ce51f27e8f6297bcc6407bddf5571fb23a3baf04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d1ad94e62cb92c02f0fb400ce51f27e8f6297bcc6407bddf5571fb23a3baf04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d1ad94e62cb92c02f0fb400ce51f27e8f6297bcc6407bddf5571fb23a3baf04", kill_on_drop: false }`
[INFO] [stdout] 6d1ad94e62cb92c02f0fb400ce51f27e8f6297bcc6407bddf5571fb23a3baf04
[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] d031129be378a4348684c96f445491a642544af992a7f810cd11dcf70630141d
[INFO] running `Command { std: "docker" "start" "-a" "d031129be378a4348684c96f445491a642544af992a7f810cd11dcf70630141d", kill_on_drop: false }`
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rstest_macros v0.17.0
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]     Checking unicode-normalization v0.1.25
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling smoltcp v0.13.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking unicode-bidi v0.3.18
[INFO] [stderr]     Checking heapless v0.9.2
[INFO] [stderr]     Checking console v0.15.11
[INFO] [stderr]     Checking is-terminal v0.4.17
[INFO] [stderr]     Checking similar v2.7.0
[INFO] [stderr]     Checking managed v0.8.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking tempfile v3.24.0
[INFO] [stderr]     Checking futures-timer v3.0.3
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking getopts v0.2.24
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking insta v1.46.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.7.5
[INFO] [stderr]    Compiling zerovec-derive v0.10.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling icu_provider_macros v1.5.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.7.5
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking zerovec v0.10.4
[INFO] [stderr]     Checking tinystr v0.7.6
[INFO] [stderr]     Checking icu_collections v1.5.0
[INFO] [stderr]     Checking icu_locid v1.5.0
[INFO] [stderr]     Checking icu_provider v1.5.0
[INFO] [stderr]     Checking icu_locid_transform v1.5.0
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking icu_properties v1.5.1
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking rstest v0.17.0
[INFO] [stderr]     Checking icu_normalizer v1.5.0
[INFO] [stderr]     Checking idna v1.0.1
[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(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smoltcp` (bench "bench") due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d031129be378a4348684c96f445491a642544af992a7f810cd11dcf70630141d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d031129be378a4348684c96f445491a642544af992a7f810cd11dcf70630141d", kill_on_drop: false }`
[INFO] [stdout] d031129be378a4348684c96f445491a642544af992a7f810cd11dcf70630141d
