[INFO] cloning repository https://github.com/onlycs/mensura
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/onlycs/mensura" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fonlycs%2Fmensura", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fonlycs%2Fmensura'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 698a931c674b02c727145274886b3e6772f257d6
[INFO] checking onlycs/mensura against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fonlycs%2Fmensura" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/onlycs/mensura
[INFO] finished tweaking git repo https://github.com/onlycs/mensura
[INFO] tweaked toml for git repo https://github.com/onlycs/mensura written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/onlycs/mensura 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/onlycs/mensura 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 rand_core v0.10.1
[INFO] [stderr]   Downloaded pastey v0.2.2
[INFO] [stderr]   Downloaded rand v0.10.1
[INFO] [stderr]   Downloaded nalgebra v0.34.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a814022a973336782e0a5b6dd2d851b41fcb869257a3e4c591267a1475f2ae8b
[INFO] running `Command { std: "docker" "start" "-a" "a814022a973336782e0a5b6dd2d851b41fcb869257a3e4c591267a1475f2ae8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a814022a973336782e0a5b6dd2d851b41fcb869257a3e4c591267a1475f2ae8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a814022a973336782e0a5b6dd2d851b41fcb869257a3e4c591267a1475f2ae8b", kill_on_drop: false }`
[INFO] [stdout] a814022a973336782e0a5b6dd2d851b41fcb869257a3e4c591267a1475f2ae8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] faf621b10869291788ed731723e1db6018f182a8f5703c1f26db65ba6917c6d1
[INFO] running `Command { std: "docker" "start" "-a" "faf621b10869291788ed731723e1db6018f182a8f5703c1f26db65ba6917c6d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.185
[INFO] [stderr]     Checking rand_core v0.10.1
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]     Checking cpufeatures v0.3.0
[INFO] [stderr]    Compiling pastey v0.2.2
[INFO] [stderr]     Checking chacha20 v0.10.0
[INFO] [stderr]     Checking mensura v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:149:1
[INFO] [stdout]     |
[INFO] [stdout] 149 | / #![feature(
[INFO] [stdout] 150 | |     generic_const_exprs,
[INFO] [stdout] 151 | |     const_trait_impl,
[INFO] [stdout] 152 | |     const_ops,
[INFO] [stdout] ...   |
[INFO] [stdout] 157 | |     core_float_math
[INFO] [stdout] 158 | | )]
[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 `mensura` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "faf621b10869291788ed731723e1db6018f182a8f5703c1f26db65ba6917c6d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faf621b10869291788ed731723e1db6018f182a8f5703c1f26db65ba6917c6d1", kill_on_drop: false }`
[INFO] [stdout] faf621b10869291788ed731723e1db6018f182a8f5703c1f26db65ba6917c6d1
