[INFO] cloning repository https://github.com/Seeker14491/bbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Seeker14491/bbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSeeker14491%2Fbbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSeeker14491%2Fbbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9364d2e48dcb1c011a40d618d9e4c07552650c52
[INFO] checking Seeker14491/bbrot against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSeeker14491%2Fbbrot" "/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/Seeker14491/bbrot 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/Seeker14491/bbrot
[INFO] finished tweaking git repo https://github.com/Seeker14491/bbrot
[INFO] tweaked toml for git repo https://github.com/Seeker14491/bbrot written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Seeker14491/bbrot 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] [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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ddda2be7d8220b873630f367dfd27a3a448f0d485ef3d6ec3bcdc9e3c721d627
[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" "ddda2be7d8220b873630f367dfd27a3a448f0d485ef3d6ec3bcdc9e3c721d627", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddda2be7d8220b873630f367dfd27a3a448f0d485ef3d6ec3bcdc9e3c721d627", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddda2be7d8220b873630f367dfd27a3a448f0d485ef3d6ec3bcdc9e3c721d627", kill_on_drop: false }`
[INFO] [stdout] ddda2be7d8220b873630f367dfd27a3a448f0d485ef3d6ec3bcdc9e3c721d627
[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" "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] c3ee1a4860ddbcaea5151fb945bc24a957fb1fad3ccd9f57e3b17b28a55b6e9c
[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" "c3ee1a4860ddbcaea5151fb945bc24a957fb1fad3ccd9f57e3b17b28a55b6e9c", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.24
[INFO] [stderr]     Checking num-traits v0.1.39
[INFO] [stderr]     Checking scopeguard v0.3.2
[INFO] [stderr]     Checking either v1.1.0
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]     Checking futures v0.1.14
[INFO] [stderr]    Compiling gcc v0.3.51
[INFO] [stderr]     Checking adler32 v1.0.0
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking rustc-demangle v0.1.4
[INFO] [stderr]     Checking cfg-if v0.1.1
[INFO] [stderr]     Checking unicode-segmentation v1.1.0
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking deflate v0.7.11
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking num-integer v0.1.34
[INFO] [stderr]     Checking num-complex v0.1.38
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.11
[INFO] [stderr]     Checking textwrap v0.6.0
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]     Checking clap v2.25.0
[INFO] [stderr]     Checking png v0.8.0
[INFO] [stderr]     Checking num-bigint v0.1.39
[INFO] [stderr]     Checking rayon-core v1.2.1
[INFO] [stderr]     Checking rayon v0.8.1
[INFO] [stderr]     Checking num-rational v0.1.38
[INFO] [stderr]     Checking num v0.1.39
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.14.0
[INFO] [stderr]     Checking bbrot-lib v0.0.1 (/opt/rustwide/workdir/bbrot-lib)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> bbrot-lib/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(conservative_impl_trait, integer_atomics, try_from)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> bbrot-lib/src/path_iterator/mod.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     (q * (q + c.re - one_quarter) < one_quarter * c.im.powi(2))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> bbrot-lib/src/path_iterator/mod.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     ((c.re + T::one()).powi(2) + c.im.powi(2) < FromPrimitive::from_f64(1.0 / 16.0).unwrap())
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bbrot-lib` due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c3ee1a4860ddbcaea5151fb945bc24a957fb1fad3ccd9f57e3b17b28a55b6e9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ee1a4860ddbcaea5151fb945bc24a957fb1fad3ccd9f57e3b17b28a55b6e9c", kill_on_drop: false }`
[INFO] [stdout] c3ee1a4860ddbcaea5151fb945bc24a957fb1fad3ccd9f57e3b17b28a55b6e9c
