[INFO] cloning repository https://github.com/colemanator/single-event-upset-detector
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/colemanator/single-event-upset-detector" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolemanator%2Fsingle-event-upset-detector", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolemanator%2Fsingle-event-upset-detector'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5c85a0ebe8ee72ebbc77b60e6ab7c69aa6da032
[INFO] testing colemanator/single-event-upset-detector against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolemanator%2Fsingle-event-upset-detector" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/colemanator/single-event-upset-detector on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/colemanator/single-event-upset-detector
[INFO] finished tweaking git repo https://github.com/colemanator/single-event-upset-detector
[INFO] tweaked toml for git repo https://github.com/colemanator/single-event-upset-detector written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/colemanator/single-event-upset-detector already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/portable-simd`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1a4d29d26699635f36f36cee016108f9a592c342b24ee6df325e92e67a0c207
[INFO] running `Command { std: "docker" "start" "-a" "e1a4d29d26699635f36f36cee016108f9a592c342b24ee6df325e92e67a0c207", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1a4d29d26699635f36f36cee016108f9a592c342b24ee6df325e92e67a0c207", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1a4d29d26699635f36f36cee016108f9a592c342b24ee6df325e92e67a0c207", kill_on_drop: false }`
[INFO] [stdout] e1a4d29d26699635f36f36cee016108f9a592c342b24ee6df325e92e67a0c207
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1be42b2ed9ebcbc5e4912723680dbdc5cf351c9abf638a291224796b443615b1
[INFO] running `Command { std: "docker" "start" "-a" "1be42b2ed9ebcbc5e4912723680dbdc5cf351c9abf638a291224796b443615b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling syn v1.0.78
[INFO] [stderr]    Compiling boxfnonce v0.1.1
[INFO] [stderr]    Compiling core_simd v0.1.0 (https://github.com/rust-lang/portable-simd#a16b481a)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/portable-simd-311bd65e6952a0da/a16b481/crates/core_simd/src/lib.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout] 3  | / #![feature(
[INFO] [stdout] 4  | |     adt_const_params,
[INFO] [stdout] 5  | |     const_fn_trait_bound,
[INFO] [stdout] 6  | |     platform_intrinsics,
[INFO] [stdout] ...  |
[INFO] [stdout] 10 | |     stdsimd
[INFO] [stdout] 11 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/portable-simd-311bd65e6952a0da/a16b481/crates/core_simd/src/lib.rs:12:46
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![cfg_attr(feature = "generic_const_exprs", feature(generic_const_exprs))]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling daemonize v0.4.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `core_simd` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1be42b2ed9ebcbc5e4912723680dbdc5cf351c9abf638a291224796b443615b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1be42b2ed9ebcbc5e4912723680dbdc5cf351c9abf638a291224796b443615b1", kill_on_drop: false }`
[INFO] [stdout] 1be42b2ed9ebcbc5e4912723680dbdc5cf351c9abf638a291224796b443615b1