[INFO] cloning repository https://github.com/ys4e/ys-sniffer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ys4e/ys-sniffer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fys4e%2Fys-sniffer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fys4e%2Fys-sniffer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 161f343164346f65d699720f4046f8deda559750
[INFO] checking ys4e/ys-sniffer against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fys4e%2Fys-sniffer" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ys4e/ys-sniffer
[INFO] finished tweaking git repo https://github.com/ys4e/ys-sniffer
[INFO] tweaked toml for git repo https://github.com/ys4e/ys-sniffer written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ys4e/ys-sniffer 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 git repo https://github.com/ys4e/ys-sniffer 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] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pcap v2.2.0
[INFO] [stderr]   Downloaded ys-kcp v1.2.1
[INFO] [stderr]   Downloaded protoshark v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8ff31b7f8c28aa3cbe8ce8d076e22c9cd1fd6377030619b2ad05865594f3371a
[INFO] running `Command { std: "docker" "start" "-a" "8ff31b7f8c28aa3cbe8ce8d076e22c9cd1fd6377030619b2ad05865594f3371a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ff31b7f8c28aa3cbe8ce8d076e22c9cd1fd6377030619b2ad05865594f3371a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ff31b7f8c28aa3cbe8ce8d076e22c9cd1fd6377030619b2ad05865594f3371a", kill_on_drop: false }`
[INFO] [stdout] 8ff31b7f8c28aa3cbe8ce8d076e22c9cd1fd6377030619b2ad05865594f3371a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b85c818041dda6c84fba4108c40210dc6371e6389607ee9c2c04ac45116d6670
[INFO] running `Command { std: "docker" "start" "-a" "b85c818041dda6c84fba4108c40210dc6371e6389607ee9c2c04ac45116d6670", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking zeroize v1.8.1
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]     Checking pem-rfc7468 v0.7.0
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling num-bigint-dig v0.8.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling libloading v0.8.8
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking errno v0.2.8
[INFO] [stderr]     Checking xxhash-rust v0.8.15
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking der v0.7.10
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]     Checking ys-kcp v1.2.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ys-kcp-1.2.1/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(stmt_expr_attributes)]
[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 `ys-kcp` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b85c818041dda6c84fba4108c40210dc6371e6389607ee9c2c04ac45116d6670", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b85c818041dda6c84fba4108c40210dc6371e6389607ee9c2c04ac45116d6670", kill_on_drop: false }`
[INFO] [stdout] b85c818041dda6c84fba4108c40210dc6371e6389607ee9c2c04ac45116d6670