[INFO] cloning repository https://github.com/brinchj/rustfest-fastware
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brinchj/rustfest-fastware" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrinchj%2Frustfest-fastware", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrinchj%2Frustfest-fastware'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4fc8894a9efddf3a679558b3ef32fb997dbd4772
[INFO] testing brinchj/rustfest-fastware against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrinchj%2Frustfest-fastware" "/workspace/builds/worker-94/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-94/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brinchj/rustfest-fastware 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 git repo https://github.com/brinchj/rustfest-fastware
[INFO] finished tweaking git repo https://github.com/brinchj/rustfest-fastware
[INFO] tweaked toml for git repo https://github.com/brinchj/rustfest-fastware written to /workspace/builds/worker-94/source/Cargo.toml
[INFO] crate git repo https://github.com/brinchj/rustfest-fastware already has a lockfile, it will not be regenerated
[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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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] 9457bc4c0de8605c1b3ac213b5bf9194785da60042553ac5a311ce4dea6b6d00
[INFO] running `Command { std: "docker" "start" "-a" "9457bc4c0de8605c1b3ac213b5bf9194785da60042553ac5a311ce4dea6b6d00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9457bc4c0de8605c1b3ac213b5bf9194785da60042553ac5a311ce4dea6b6d00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9457bc4c0de8605c1b3ac213b5bf9194785da60042553ac5a311ce4dea6b6d00", kill_on_drop: false }`
[INFO] [stdout] 9457bc4c0de8605c1b3ac213b5bf9194785da60042553ac5a311ce4dea6b6d00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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] 166923f4c973bdd3eaae1c7277b933f09154c8e81b968c2505f2d53746cae7d5
[INFO] running `Command { std: "docker" "start" "-a" "166923f4c973bdd3eaae1c7277b933f09154c8e81b968c2505f2d53746cae7d5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling byteorder v1.2.2
[INFO] [stderr]    Compiling ascii v0.7.1
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling im v10.2.0
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling combine v3.2.0
[INFO] [stderr]    Compiling rustfest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.89s
[INFO] running `Command { std: "docker" "inspect" "166923f4c973bdd3eaae1c7277b933f09154c8e81b968c2505f2d53746cae7d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "166923f4c973bdd3eaae1c7277b933f09154c8e81b968c2505f2d53746cae7d5", kill_on_drop: false }`
[INFO] [stdout] 166923f4c973bdd3eaae1c7277b933f09154c8e81b968c2505f2d53746cae7d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fea855ab492048bbeaa6cc5b0d987cabaf2d8ace2f8568f36f5669b4ff335ead
[INFO] running `Command { std: "docker" "start" "-a" "fea855ab492048bbeaa6cc5b0d987cabaf2d8ace2f8568f36f5669b4ff335ead", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rustfest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, feature(test))]
[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 `rustfest`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "fea855ab492048bbeaa6cc5b0d987cabaf2d8ace2f8568f36f5669b4ff335ead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fea855ab492048bbeaa6cc5b0d987cabaf2d8ace2f8568f36f5669b4ff335ead", kill_on_drop: false }`
[INFO] [stdout] fea855ab492048bbeaa6cc5b0d987cabaf2d8ace2f8568f36f5669b4ff335ead
