[INFO] cloning repository https://github.com/alexsparrow/brainlift
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexsparrow/brainlift" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexsparrow%2Fbrainlift", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexsparrow%2Fbrainlift'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9a4ddaac95e8d58a8027452a6a85fe0d040b69c5
[INFO] checking alexsparrow/brainlift against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexsparrow%2Fbrainlift" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexsparrow/brainlift on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alexsparrow/brainlift
[INFO] finished tweaking git repo https://github.com/alexsparrow/brainlift
[INFO] tweaked toml for git repo https://github.com/alexsparrow/brainlift written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/alexsparrow/brainlift already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1682f12567dd2cfb7f21080ae7f60cada5975492f858eb208cb837da66a8867
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f1682f12567dd2cfb7f21080ae7f60cada5975492f858eb208cb837da66a8867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1682f12567dd2cfb7f21080ae7f60cada5975492f858eb208cb837da66a8867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1682f12567dd2cfb7f21080ae7f60cada5975492f858eb208cb837da66a8867", kill_on_drop: false }`
[INFO] [stdout] f1682f12567dd2cfb7f21080ae7f60cada5975492f858eb208cb837da66a8867
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f25ec628a60c2709706c8769e00c33eac69dda74d2ecf1a7dd58c62c1c547bcf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f25ec628a60c2709706c8769e00c33eac69dda74d2ecf1a7dd58c62c1c547bcf", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling cranelift-entity v0.58.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.58.0
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]     Checking errno v0.2.5
[INFO] [stderr]     Checking region v2.1.2
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.58.0
[INFO] [stderr]     Checking cranelift-bforest v0.58.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.16
[INFO] [stderr]     Checking thiserror v1.0.16
[INFO] [stderr]    Compiling cranelift-codegen v0.58.0
[INFO] [stderr]     Checking cranelift-frontend v0.58.0
[INFO] [stderr]     Checking cranelift-native v0.58.0
[INFO] [stderr]     Checking cranelift-module v0.58.0
[INFO] [stderr]     Checking cranelift-simplejit v0.58.0
[INFO] [stderr]     Checking cranelift v0.58.0
[INFO] [stderr]     Checking brainlift v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/benchmarks.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `brainlift` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `brainfuck_jit`
[INFO] [stdout]  --> tests/basic.rs:2:43
[INFO] [stdout]   |
[INFO] [stdout] 2 | use brainlift::jit::{brainfuck_jit_state, brainfuck_jit};
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DefaultStdLib`
[INFO] [stdout]  --> tests/basic.rs:3:38
[INFO] [stdout]   |
[INFO] [stdout] 3 | use brainlift::{stdlib::{MockStdLib, DefaultStdLib}, state::BrainfuckState};
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f25ec628a60c2709706c8769e00c33eac69dda74d2ecf1a7dd58c62c1c547bcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f25ec628a60c2709706c8769e00c33eac69dda74d2ecf1a7dd58c62c1c547bcf", kill_on_drop: false }`
[INFO] [stdout] f25ec628a60c2709706c8769e00c33eac69dda74d2ecf1a7dd58c62c1c547bcf
