[INFO] fetching crate fe_osi 0.1.1...
[INFO] checking fe_osi-0.1.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate fe_osi 0.1.1 into /workspace/builds/worker-98/source
[INFO] validating manifest of crates.io crate fe_osi 0.1.1 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] removed /workspace/builds/worker-98/source/.cargo/config
[INFO] started tweaking crates.io crate fe_osi 0.1.1
[INFO] finished tweaking crates.io crate fe_osi 0.1.1
[INFO] tweaked toml for crates.io crate fe_osi 0.1.1 written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cty v0.1.5
[INFO] [stderr]   Downloaded cstr_core v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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] c6267b18c121f29168f480d1cab56d8e8ac8564dc2520d5c92118b14317111dd
[INFO] running `Command { std: "docker" "start" "-a" "c6267b18c121f29168f480d1cab56d8e8ac8564dc2520d5c92118b14317111dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6267b18c121f29168f480d1cab56d8e8ac8564dc2520d5c92118b14317111dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6267b18c121f29168f480d1cab56d8e8ac8564dc2520d5c92118b14317111dd", kill_on_drop: false }`
[INFO] [stdout] c6267b18c121f29168f480d1cab56d8e8ac8564dc2520d5c92118b14317111dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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] 963db7a4a3c79b49b4833292b1f44401ef439af94ee734e649b02a7d41de2859
[INFO] running `Command { std: "docker" "start" "-a" "963db7a4a3c79b49b4833292b1f44401ef439af94ee734e649b02a7d41de2859", kill_on_drop: false }`
[INFO] [stderr]     Checking cty v0.1.5
[INFO] [stderr]    Compiling fe_osi v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cstr_core v0.1.2
[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/cstr_core-0.1.2/src/lib.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![cfg_attr(feature = "alloc", feature(alloc))]
[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 `cstr_core` 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" "963db7a4a3c79b49b4833292b1f44401ef439af94ee734e649b02a7d41de2859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "963db7a4a3c79b49b4833292b1f44401ef439af94ee734e649b02a7d41de2859", kill_on_drop: false }`
[INFO] [stdout] 963db7a4a3c79b49b4833292b1f44401ef439af94ee734e649b02a7d41de2859
