[INFO] fetching crate system76_ecflash 0.1.3...
[INFO] testing system76_ecflash-0.1.3 against 1.60.0 for beta-1.61-1
[INFO] extracting crate system76_ecflash 0.1.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate system76_ecflash 0.1.3 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 crates.io crate system76_ecflash 0.1.3
[INFO] finished tweaking crates.io crate system76_ecflash 0.1.3
[INFO] tweaked toml for crates.io crate system76_ecflash 0.1.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate system76_ecflash 0.1.3 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]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_hwio v0.1.5
[INFO] [stderr]   Downloaded libudev v0.3.0
[INFO] [stderr]   Downloaded serialport v4.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] d046859bd1dceab966497b997e4d7e1cdca97e332cd9e1950c52f0b44dfd58f7
[INFO] running `Command { std: "docker" "start" "-a" "d046859bd1dceab966497b997e4d7e1cdca97e332cd9e1950c52f0b44dfd58f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d046859bd1dceab966497b997e4d7e1cdca97e332cd9e1950c52f0b44dfd58f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d046859bd1dceab966497b997e4d7e1cdca97e332cd9e1950c52f0b44dfd58f7", kill_on_drop: false }`
[INFO] [stdout] d046859bd1dceab966497b997e4d7e1cdca97e332cd9e1950c52f0b44dfd58f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] bb1b6a3b83cecdf228a3907fc8cc244cfdba863da0c0b38ad6b034e20d732127
[INFO] running `Command { std: "docker" "start" "-a" "bb1b6a3b83cecdf228a3907fc8cc244cfdba863da0c0b38ad6b034e20d732127", kill_on_drop: false }`
[INFO] [stderr]    Compiling system76_ecflash v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "bb1b6a3b83cecdf228a3907fc8cc244cfdba863da0c0b38ad6b034e20d732127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb1b6a3b83cecdf228a3907fc8cc244cfdba863da0c0b38ad6b034e20d732127", kill_on_drop: false }`
[INFO] [stdout] bb1b6a3b83cecdf228a3907fc8cc244cfdba863da0c0b38ad6b034e20d732127
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99f58fcb6544f0bd95f42a0b7be0f7c109e9ad67a020a5047c10965c10de9d9e
[INFO] running `Command { std: "docker" "start" "-a" "99f58fcb6544f0bd95f42a0b7be0f7c109e9ad67a020a5047c10965c10de9d9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling redox_hwio v0.1.5
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[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/redox_hwio-0.1.5/src/lib.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![cfg_attr(not(feature = "stable"), feature(const_fn_trait_bound))]
[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 `redox_hwio` 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" "99f58fcb6544f0bd95f42a0b7be0f7c109e9ad67a020a5047c10965c10de9d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99f58fcb6544f0bd95f42a0b7be0f7c109e9ad67a020a5047c10965c10de9d9e", kill_on_drop: false }`
[INFO] [stdout] 99f58fcb6544f0bd95f42a0b7be0f7c109e9ad67a020a5047c10965c10de9d9e