[INFO] cloning repository https://github.com/kkspeed/imdb-top1000
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kkspeed/imdb-top1000" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkkspeed%2Fimdb-top1000", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkkspeed%2Fimdb-top1000'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc583a53bc7a0d9ac1e2b5dea827a1222353ab2f
[INFO] testing kkspeed/imdb-top1000 against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkkspeed%2Fimdb-top1000" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kkspeed/imdb-top1000 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/kkspeed/imdb-top1000
[INFO] finished tweaking git repo https://github.com/kkspeed/imdb-top1000
[INFO] tweaked toml for git repo https://github.com/kkspeed/imdb-top1000 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/kkspeed/imdb-top1000 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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] ce873610dbd3fcb72335f10522b1070ecb005427210df8abbf42e98777b4c991
[INFO] running `Command { std: "docker" "start" "-a" "ce873610dbd3fcb72335f10522b1070ecb005427210df8abbf42e98777b4c991", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce873610dbd3fcb72335f10522b1070ecb005427210df8abbf42e98777b4c991", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce873610dbd3fcb72335f10522b1070ecb005427210df8abbf42e98777b4c991", kill_on_drop: false }`
[INFO] [stdout] ce873610dbd3fcb72335f10522b1070ecb005427210df8abbf42e98777b4c991
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae232659813797803d7eca809b31cecbba28f51eff63c0843e24eb681adb3113
[INFO] running `Command { std: "docker" "start" "-a" "ae232659813797803d7eca809b31cecbba28f51eff63c0843e24eb681adb3113", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling byteorder v1.2.1
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]    Compiling futures v0.1.20
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling lazycell v0.6.0
[INFO] [stderr]    Compiling serde v1.0.36
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling yansi v0.3.4
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling cc v1.0.9
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling scoped-tls v0.1.1
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling httparse v1.2.4
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling build_const v0.2.0
[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/yansi-0.3.4/src/lib.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature="nightly", feature(const_atomic_bool_new))]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling untrusted v0.5.1
[INFO] [stderr]    Compiling take v0.1.0
[INFO] [stderr]    Compiling utf-8 v0.7.2
[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 `yansi` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ae232659813797803d7eca809b31cecbba28f51eff63c0843e24eb681adb3113", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae232659813797803d7eca809b31cecbba28f51eff63c0843e24eb681adb3113", kill_on_drop: false }`
[INFO] [stdout] ae232659813797803d7eca809b31cecbba28f51eff63c0843e24eb681adb3113