[INFO] cloning repository https://github.com/VladTyzhnevyi/PCB-Debugging-Tests
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VladTyzhnevyi/PCB-Debugging-Tests" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVladTyzhnevyi%2FPCB-Debugging-Tests", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVladTyzhnevyi%2FPCB-Debugging-Tests'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cd2370b0f8fd5318afb98c101d12cc929dbadaa8
[INFO] testing VladTyzhnevyi/PCB-Debugging-Tests against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVladTyzhnevyi%2FPCB-Debugging-Tests" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VladTyzhnevyi/PCB-Debugging-Tests on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/VladTyzhnevyi/PCB-Debugging-Tests
[INFO] finished tweaking git repo https://github.com/VladTyzhnevyi/PCB-Debugging-Tests
[INFO] tweaked toml for git repo https://github.com/VladTyzhnevyi/PCB-Debugging-Tests written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/VladTyzhnevyi/PCB-Debugging-Tests already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 657ab952ef2cb24e973e0a9ddaf0f028393b8a44d675be25b14be283fce79db9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "657ab952ef2cb24e973e0a9ddaf0f028393b8a44d675be25b14be283fce79db9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "657ab952ef2cb24e973e0a9ddaf0f028393b8a44d675be25b14be283fce79db9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "657ab952ef2cb24e973e0a9ddaf0f028393b8a44d675be25b14be283fce79db9", kill_on_drop: false }`
[INFO] [stdout] 657ab952ef2cb24e973e0a9ddaf0f028393b8a44d675be25b14be283fce79db9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b19a03cb1e6e9eb97a6a7c79f2907740332ec0c8b1ad3fbb4163b189d3a3d05c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b19a03cb1e6e9eb97a6a7c79f2907740332ec0c8b1ad3fbb4163b189d3a3d05c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling cortex-m v0.6.2
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling vcell v0.1.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.12
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cortex-m v0.5.10
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling tm4c129x v0.8.0
[INFO] [stderr]    Compiling managed v0.5.1
[INFO] [stderr]    Compiling crc v1.8.1
[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/managed-0.5.1/src/lib.rs:3:38
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(feature = "map", feature(slice_rotate))]
[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 `managed` 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" "b19a03cb1e6e9eb97a6a7c79f2907740332ec0c8b1ad3fbb4163b189d3a3d05c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b19a03cb1e6e9eb97a6a7c79f2907740332ec0c8b1ad3fbb4163b189d3a3d05c", kill_on_drop: false }`
[INFO] [stdout] b19a03cb1e6e9eb97a6a7c79f2907740332ec0c8b1ad3fbb4163b189d3a3d05c