[INFO] cloning repository https://github.com/GiacomoPope/gf5_248_experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GiacomoPope/gf5_248_experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGiacomoPope%2Fgf5_248_experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGiacomoPope%2Fgf5_248_experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3994b2fd2f0bb3a9519c3e63e63dc23248c75e9a
[INFO] checking GiacomoPope/gf5_248_experiments against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGiacomoPope%2Fgf5_248_experiments" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/GiacomoPope/gf5_248_experiments
[INFO] finished tweaking git repo https://github.com/GiacomoPope/gf5_248_experiments
[INFO] tweaked toml for git repo https://github.com/GiacomoPope/gf5_248_experiments written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/GiacomoPope/gf5_248_experiments 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/GiacomoPope/gf5_248_experiments 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 hybrid-array v0.4.10
[INFO] [stderr]   Downloaded fp2 v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b017ea0c118b0752ef132719b04405795a372a6c00463f1daf3e70cf56fdac0c
[INFO] running `Command { std: "docker" "start" "-a" "b017ea0c118b0752ef132719b04405795a372a6c00463f1daf3e70cf56fdac0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b017ea0c118b0752ef132719b04405795a372a6c00463f1daf3e70cf56fdac0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b017ea0c118b0752ef132719b04405795a372a6c00463f1daf3e70cf56fdac0c", kill_on_drop: false }`
[INFO] [stdout] b017ea0c118b0752ef132719b04405795a372a6c00463f1daf3e70cf56fdac0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] cf0bf02b62b993860aba147bc9d08a0ffac06de1d29266a7db388521a4e725dd
[INFO] running `Command { std: "docker" "start" "-a" "cf0bf02b62b993860aba147bc9d08a0ffac06de1d29266a7db388521a4e725dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling cc v1.2.60
[INFO] [stderr]    Compiling zerocopy-derive v0.8.48
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling libc v0.2.185
[INFO] [stderr]     Checking const-oid v0.10.2
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking clap_builder v4.6.0
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking criterion-plot v0.8.2
[INFO] [stderr]     Checking fp2 v0.4.2
[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/fp2-0.4.2/src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![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 `fp2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "cf0bf02b62b993860aba147bc9d08a0ffac06de1d29266a7db388521a4e725dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf0bf02b62b993860aba147bc9d08a0ffac06de1d29266a7db388521a4e725dd", kill_on_drop: false }`
[INFO] [stdout] cf0bf02b62b993860aba147bc9d08a0ffac06de1d29266a7db388521a4e725dd
