[INFO] fetching crate dochy 0.7.1...
[INFO] testing dochy-0.7.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate dochy 0.7.1 into /workspace/builds/worker-80/source
[INFO] validating manifest of crates.io crate dochy 0.7.1 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 crates.io crate dochy 0.7.1
[INFO] finished tweaking crates.io crate dochy 0.7.1
[INFO] tweaked toml for crates.io crate dochy 0.7.1 written to /workspace/builds/worker-80/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded dochy_fs v0.7.1
[INFO] [stderr]   Downloaded dochy_intf v0.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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] 36d048917a1d6c0fd8bc41759b4f6e51b2bd0d914d092a330b9e32e5639ee001
[INFO] running `Command { std: "docker" "start" "-a" "36d048917a1d6c0fd8bc41759b4f6e51b2bd0d914d092a330b9e32e5639ee001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36d048917a1d6c0fd8bc41759b4f6e51b2bd0d914d092a330b9e32e5639ee001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36d048917a1d6c0fd8bc41759b4f6e51b2bd0d914d092a330b9e32e5639ee001", kill_on_drop: false }`
[INFO] [stdout] 36d048917a1d6c0fd8bc41759b4f6e51b2bd0d914d092a330b9e32e5639ee001
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e65f3812fbf0624fd122b7439f85f0c059a4c360c4a563fe190a5c3887b895a2
[INFO] running `Command { std: "docker" "start" "-a" "e65f3812fbf0624fd122b7439f85f0c059a4c360c4a563fe190a5c3887b895a2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling with_capacity_safe v0.3.0
[INFO] [stderr]    Compiling snap v1.0.5
[INFO] [stderr]    Compiling metrohash v1.0.6
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[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/with_capacity_safe-0.3.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_reserve)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tempfile v3.2.0
[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 `with_capacity_safe`
[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" "e65f3812fbf0624fd122b7439f85f0c059a4c360c4a563fe190a5c3887b895a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e65f3812fbf0624fd122b7439f85f0c059a4c360c4a563fe190a5c3887b895a2", kill_on_drop: false }`
[INFO] [stdout] e65f3812fbf0624fd122b7439f85f0c059a4c360c4a563fe190a5c3887b895a2
