[INFO] cloning repository https://github.com/Kyras/system_benchmarks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kyras/system_benchmarks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyras%2Fsystem_benchmarks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyras%2Fsystem_benchmarks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a86ee17049b15af8f3c4794bf93672c3c4e63dc3
[INFO] documenting Kyras/system_benchmarks against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyras%2Fsystem_benchmarks" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kyras/system_benchmarks on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Kyras/system_benchmarks
[INFO] finished tweaking git repo https://github.com/Kyras/system_benchmarks
[INFO] tweaked toml for git repo https://github.com/Kyras/system_benchmarks written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Kyras/system_benchmarks already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1989d9063737facda34bbe66f46e2980d052511beb66dabef500cbd2cb2f4417
[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" "1989d9063737facda34bbe66f46e2980d052511beb66dabef500cbd2cb2f4417", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1989d9063737facda34bbe66f46e2980d052511beb66dabef500cbd2cb2f4417", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1989d9063737facda34bbe66f46e2980d052511beb66dabef500cbd2cb2f4417", kill_on_drop: false }`
[INFO] [stdout] 1989d9063737facda34bbe66f46e2980d052511beb66dabef500cbd2cb2f4417
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "RUSTDOCFLAGS=--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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 027d2937d1025cfc18846aec20d5ac135a17abcf4137134e0a26c7382afe2eac
[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" "027d2937d1025cfc18846aec20d5ac135a17abcf4137134e0a26c7382afe2eac", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.112
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]    Compiling protobuf v2.14.0
[INFO] [stderr]     Checking pnet_base v0.26.0
[INFO] [stderr]    Compiling prometheus v0.7.0
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling ocaml v0.9.3
[INFO] [stderr]    Compiling crc32c v0.4.0
[INFO] [stderr]     Checking integer-encoding v1.1.5
[INFO] [stderr]    Compiling pnet v0.26.0
[INFO] [stderr]    Compiling storage v0.0.3 (https://github.com/simplestaking/tezedge#16d3b518)
[INFO] [stderr]     Checking managed v0.7.2
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]     Checking sharded-slab v0.0.9
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking pnet_macros_support v0.26.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking pnet_sys v0.26.0
[INFO] [stderr]     Checking page_size v0.4.2
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking nfq v0.2.4
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling filetime v0.2.10
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling libflate v0.1.27
[INFO] [stderr]     Checking smoltcp v0.6.0
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling tar v0.4.28
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling serde_derive v1.0.112
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling getset v0.0.9
[INFO] [stderr]    Compiling enum-iterator-derive v0.5.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.8
[INFO] [stderr]     Checking commitlog v0.1.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/commitlog-0.1.1/src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![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 `commitlog`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "027d2937d1025cfc18846aec20d5ac135a17abcf4137134e0a26c7382afe2eac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "027d2937d1025cfc18846aec20d5ac135a17abcf4137134e0a26c7382afe2eac", kill_on_drop: false }`
[INFO] [stdout] 027d2937d1025cfc18846aec20d5ac135a17abcf4137134e0a26c7382afe2eac
