[INFO] fetching crate ajtai 0.1.1...
[INFO] checking ajtai-0.1.1 against 1.95.0 for pr-155915
[INFO] extracting crate ajtai 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate ajtai 0.1.1
[INFO] finished tweaking crates.io crate ajtai 0.1.1
[INFO] tweaked toml for crates.io crate ajtai 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ajtai 0.1.1 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 ajtai 0.1.1 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 addchain v0.2.0
[INFO] [stderr]   Downloaded ff_derive v0.13.0
[INFO] [stderr]   Downloaded rstest_macros v0.24.0
[INFO] [stderr]   Downloaded relative-path v1.9.3
[INFO] [stderr]   Downloaded semver v1.0.24
[INFO] [stderr]   Downloaded rstest v0.24.0
[INFO] [stderr]   Downloaded syn v2.0.96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] eb2a0e90fd7fdb045a4202a53e4a6afe496f3ac254124accee3e50e684548401
[INFO] running `Command { std: "docker" "start" "-a" "eb2a0e90fd7fdb045a4202a53e4a6afe496f3ac254124accee3e50e684548401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb2a0e90fd7fdb045a4202a53e4a6afe496f3ac254124accee3e50e684548401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb2a0e90fd7fdb045a4202a53e4a6afe496f3ac254124accee3e50e684548401", kill_on_drop: false }`
[INFO] [stdout] eb2a0e90fd7fdb045a4202a53e4a6afe496f3ac254124accee3e50e684548401
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 883b3f5c504a0b0688c3e1db7c9c574b6cb7141628ff32fb7937d47b60346e99
[INFO] running `Command { std: "docker" "start" "-a" "883b3f5c504a0b0688c3e1db7c9c574b6cb7141628ff32fb7937d47b60346e99", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling semver v1.0.24
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling relative-path v1.9.3
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling rstest_macros v0.24.0
[INFO] [stderr]    Compiling addchain v0.2.0
[INFO] [stderr]    Compiling ff_derive v0.13.0
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]     Checking ajtai v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(generic_const_exprs)]
[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 `ajtai` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "883b3f5c504a0b0688c3e1db7c9c574b6cb7141628ff32fb7937d47b60346e99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "883b3f5c504a0b0688c3e1db7c9c574b6cb7141628ff32fb7937d47b60346e99", kill_on_drop: false }`
[INFO] [stdout] 883b3f5c504a0b0688c3e1db7c9c574b6cb7141628ff32fb7937d47b60346e99
