[INFO] cloning repository https://github.com/laopo001/hello_rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/laopo001/hello_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaopo001%2Fhello_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaopo001%2Fhello_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8508dd8409ca1c4b6521a14f79dd443594cde384 [INFO] testing laopo001/hello_rust against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaopo001%2Fhello_rust" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/laopo001/hello_rust 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/laopo001/hello_rust [INFO] finished tweaking git repo https://github.com/laopo001/hello_rust [INFO] tweaked toml for git repo https://github.com/laopo001/hello_rust written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/laopo001/hello_rust 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] Downloading crates ... [INFO] [stderr] Downloaded futures-core-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-sink-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-executor-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-channel-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-util-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded pin-project-lite v0.1.2 [INFO] [stderr] Downloaded async-task v1.2.1 [INFO] [stderr] Downloaded futures-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-io-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded once_cell v1.3.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 8533a540cf925a237f8c884d20edc4dd45406ecd4d666effac7d5774302dc3cb [INFO] running `Command { std: "docker" "start" "-a" "8533a540cf925a237f8c884d20edc4dd45406ecd4d666effac7d5774302dc3cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8533a540cf925a237f8c884d20edc4dd45406ecd4d666effac7d5774302dc3cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8533a540cf925a237f8c884d20edc4dd45406ecd4d666effac7d5774302dc3cb", kill_on_drop: false }` [INFO] [stdout] 8533a540cf925a237f8c884d20edc4dd45406ecd4d666effac7d5774302dc3cb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 9081fc04bfad976e798f3b19f7e6fc176f04721788bd1fe2ccc54e23ba563afc [INFO] running `Command { std: "docker" "start" "-a" "9081fc04bfad976e798f3b19f7e6fc176f04721788bd1fe2ccc54e23ba563afc", kill_on_drop: false }` [INFO] [stderr] Compiling either v1.5.3 [INFO] [stderr] Compiling memchr v2.3.0 [INFO] [stderr] Compiling futures-core-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling futures-io-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling futures-core v0.3.1 [INFO] [stderr] Compiling pin-project-lite v0.1.2 [INFO] [stderr] Compiling futures-io v0.3.1 [INFO] [stderr] Compiling once_cell v1.3.0 [INFO] [stderr] Compiling lock_api v0.3.3 [INFO] [stderr] Compiling indexmap v1.3.1 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling num_cpus v1.11.1 [INFO] [stderr] Compiling net2 v0.2.33 [INFO] [stderr] Compiling tokio-executor v0.1.9 [INFO] [stderr] Compiling async-task v1.2.1 [INFO] [stderr] Compiling time v0.1.42 [INFO] [stderr] Compiling smallvec v0.6.13 [INFO] [stderr] Compiling hyper v0.12.35 [INFO] [stderr] Compiling want v0.2.0 [INFO] [stderr] Compiling kv-log-macro v1.0.4 [INFO] [stderr] Compiling crossbeam-channel v0.4.0 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling tokio-current-thread v0.1.6 [INFO] [stderr] Compiling tokio-timer v0.2.12 [INFO] [stderr] Compiling mio v0.6.21 [INFO] [stderr] Compiling futures-sink-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling tokio-threadpool v0.1.17 [INFO] [stderr] Compiling futures-cpupool v0.1.8 [INFO] [stderr] Compiling futures-channel-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling tokio-io v0.1.12 [INFO] [stderr] Compiling http v0.1.21 [INFO] [stderr] Compiling string v0.2.1 [INFO] [stderr] Compiling tokio-buf v0.1.1 [INFO] [stderr] Compiling mio-uds v0.6.7 [INFO] [stderr] Compiling tokio-reactor v0.1.11 [INFO] [stderr] Compiling futures-util-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling async-std v1.4.0 [INFO] [stderr] Compiling tokio-tcp v0.1.3 [INFO] [stderr] Compiling tokio v0.1.22 [INFO] [stderr] Compiling h2 v0.1.26 [INFO] [stderr] Compiling http-body v0.1.0 [INFO] [stderr] Compiling futures-executor-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling futures-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling hello_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/bin/type_name.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(core_intrinsics)] [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 `hello_rust` 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" "9081fc04bfad976e798f3b19f7e6fc176f04721788bd1fe2ccc54e23ba563afc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9081fc04bfad976e798f3b19f7e6fc176f04721788bd1fe2ccc54e23ba563afc", kill_on_drop: false }` [INFO] [stdout] 9081fc04bfad976e798f3b19f7e6fc176f04721788bd1fe2ccc54e23ba563afc