[INFO] cloning repository https://github.com/justanotherdot/perf-and-dhat-profiling-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/justanotherdot/perf-and-dhat-profiling-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustanotherdot%2Fperf-and-dhat-profiling-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustanotherdot%2Fperf-and-dhat-profiling-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b0236eeb80de07d3614d89eec03b8122873c6f67
[INFO] testing justanotherdot/perf-and-dhat-profiling-example against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustanotherdot%2Fperf-and-dhat-profiling-example" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/justanotherdot/perf-and-dhat-profiling-example on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/justanotherdot/perf-and-dhat-profiling-example
[INFO] finished tweaking git repo https://github.com/justanotherdot/perf-and-dhat-profiling-example
[INFO] tweaked toml for git repo https://github.com/justanotherdot/perf-and-dhat-profiling-example written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/justanotherdot/perf-and-dhat-profiling-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3ba8b919895c12749890bf48f8bcbc1c4acdf983eb82f7add2a5eefbac1cc36e
[INFO] running `Command { std: "docker" "start" "-a" "3ba8b919895c12749890bf48f8bcbc1c4acdf983eb82f7add2a5eefbac1cc36e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ba8b919895c12749890bf48f8bcbc1c4acdf983eb82f7add2a5eefbac1cc36e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ba8b919895c12749890bf48f8bcbc1c4acdf983eb82f7add2a5eefbac1cc36e", kill_on_drop: false }`
[INFO] [stdout] 3ba8b919895c12749890bf48f8bcbc1c4acdf983eb82f7add2a5eefbac1cc36e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c0645dcc30230562ba73a0591a8638e9d220525bbb95523e0e92e5367b668534
[INFO] running `Command { std: "docker" "start" "-a" "c0645dcc30230562ba73a0591a8638e9d220525bbb95523e0e92e5367b668534", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling thousands v0.2.0
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling object v0.25.3
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling addr2line v0.15.2
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling dhat v0.2.2
[INFO] [stderr]    Compiling perf-and-dhat-profiling-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:12
[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 `perf-and-dhat-profiling-example` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c0645dcc30230562ba73a0591a8638e9d220525bbb95523e0e92e5367b668534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0645dcc30230562ba73a0591a8638e9d220525bbb95523e0e92e5367b668534", kill_on_drop: false }`
[INFO] [stdout] c0645dcc30230562ba73a0591a8638e9d220525bbb95523e0e92e5367b668534