[INFO] fetching crate alp 0.0.1...
[INFO] checking alp-0.0.1 against 1.95.0 for pr-155915
[INFO] extracting crate alp 0.0.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate alp 0.0.1
[INFO] finished tweaking crates.io crate alp 0.0.1
[INFO] tweaked toml for crates.io crate alp 0.0.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate alp 0.0.1 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding fastlanes v0.1.8 (available: v0.5.0)
[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 const_for v0.1.5
[INFO] [stderr]   Downloaded fastlanes v0.1.8
[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] db364e8a8f5f67bba3b65ddf21d9c2fda225fadb139d3dd3ccb38c5efd6ce609
[INFO] running `Command { std: "docker" "start" "-a" "db364e8a8f5f67bba3b65ddf21d9c2fda225fadb139d3dd3ccb38c5efd6ce609", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db364e8a8f5f67bba3b65ddf21d9c2fda225fadb139d3dd3ccb38c5efd6ce609", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db364e8a8f5f67bba3b65ddf21d9c2fda225fadb139d3dd3ccb38c5efd6ce609", kill_on_drop: false }`
[INFO] [stdout] db364e8a8f5f67bba3b65ddf21d9c2fda225fadb139d3dd3ccb38c5efd6ce609
[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] f51e6b370dbd1901f141436f02ec67c1b379fbc08cf8539a0e7dec07f50754ea
[INFO] running `Command { std: "docker" "start" "-a" "f51e6b370dbd1901f141436f02ec67c1b379fbc08cf8539a0e7dec07f50754ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking arrayref v0.3.9
[INFO] [stderr]     Checking const_for v0.1.5
[INFO] [stderr]    Compiling seq-macro v0.3.6
[INFO] [stderr]     Checking fastlanes v0.1.8
[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/fastlanes-0.1.8/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![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 `fastlanes` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f51e6b370dbd1901f141436f02ec67c1b379fbc08cf8539a0e7dec07f50754ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f51e6b370dbd1901f141436f02ec67c1b379fbc08cf8539a0e7dec07f50754ea", kill_on_drop: false }`
[INFO] [stdout] f51e6b370dbd1901f141436f02ec67c1b379fbc08cf8539a0e7dec07f50754ea
