[INFO] fetching crate lightws 0.6.14...
[INFO] checking lightws-0.6.14 against 1.95.0 for pr-155915
[INFO] extracting crate lightws 0.6.14 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate lightws 0.6.14
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate lightws 0.6.14
[INFO] tweaked toml for crates.io crate lightws 0.6.14 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lightws 0.6.14 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 lightws 0.6.14 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] eed0ea888d54043e27adef36f294e8c180322e580e24c8311a735503cd2da637
[INFO] running `Command { std: "docker" "start" "-a" "eed0ea888d54043e27adef36f294e8c180322e580e24c8311a735503cd2da637", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eed0ea888d54043e27adef36f294e8c180322e580e24c8311a735503cd2da637", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eed0ea888d54043e27adef36f294e8c180322e580e24c8311a735503cd2da637", kill_on_drop: false }`
[INFO] [stdout] eed0ea888d54043e27adef36f294e8c180322e580e24c8311a735503cd2da637
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ede6e95adac877407482f174e6ce8e1adce84ba20503fd4f16f670bebef1af42
[INFO] running `Command { std: "docker" "start" "-a" "ede6e95adac877407482f174e6ce8e1adce84ba20503fd4f16f670bebef1af42", kill_on_drop: false }`
[INFO] [stderr]     Checking typenum v1.20.0
[INFO] [stderr]     Checking rand_core v0.10.1
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking errno v0.3.14
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking jiff v0.2.24
[INFO] [stderr]     Checking anstream v1.0.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.8
[INFO] [stderr]     Checking chacha20 v0.10.0
[INFO] [stderr]     Checking getrandom v0.4.2
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking rand v0.10.1
[INFO] [stderr]     Checking tokio v1.52.1
[INFO] [stderr]     Checking hybrid-array v0.4.10
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]     Checking crypto-common v0.2.1
[INFO] [stderr]     Checking block-buffer v0.12.0
[INFO] [stderr]     Checking env_filter v1.0.1
[INFO] [stderr]     Checking env_logger v0.11.10
[INFO] [stderr]     Checking digest v0.11.2
[INFO] [stderr]     Checking sha1 v0.11.0
[INFO] [stderr]     Checking lightws v0.6.14 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(specialization)]
[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 `lightws` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lightws` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "ede6e95adac877407482f174e6ce8e1adce84ba20503fd4f16f670bebef1af42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ede6e95adac877407482f174e6ce8e1adce84ba20503fd4f16f670bebef1af42", kill_on_drop: false }`
[INFO] [stdout] ede6e95adac877407482f174e6ce8e1adce84ba20503fd4f16f670bebef1af42
