[INFO] updating cached repository https://github.com/mgottschlag/rust-stm32f4-blinky
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0fb4a0c7c5f741719d2055a7c98de084d0abda9d
[INFO] checking mgottschlag/rust-stm32f4-blinky against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmgottschlag%2Frust-stm32f4-blinky" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mgottschlag/rust-stm32f4-blinky on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/mgottschlag/rust-stm32f4-blinky
[INFO] finished tweaking git repo https://github.com/mgottschlag/rust-stm32f4-blinky
[INFO] tweaked toml for git repo https://github.com/mgottschlag/rust-stm32f4-blinky written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/mgottschlag/rust-stm32f4-blinky already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3f96d75e374b3a58560caf07b821af20323fede10b4aed5729d65143b827aff
[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" "f3f96d75e374b3a58560caf07b821af20323fede10b4aed5729d65143b827aff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3f96d75e374b3a58560caf07b821af20323fede10b4aed5729d65143b827aff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3f96d75e374b3a58560caf07b821af20323fede10b4aed5729d65143b827aff", kill_on_drop: false }`
[INFO] [stdout] f3f96d75e374b3a58560caf07b821af20323fede10b4aed5729d65143b827aff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4cc3a0c6ade52807b521a39a898b85cfc2254a52f31dd5b228cce18d17e5786f
[INFO] running `Command { std: "docker" "start" "-a" "4cc3a0c6ade52807b521a39a898b85cfc2254a52f31dd5b228cce18d17e5786f", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling cortex-m v0.3.1
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]     Checking aligned v0.1.1
[INFO] [stderr]     Checking bare-metal v0.1.1
[INFO] [stderr]    Compiling cortex-m-rt v0.3.6
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking cortex-m-semihosting v0.2.0
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stdout] error[E0635]: unknown feature `const_unsafe_cell_new`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.1/src/lib.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_fn,const_unsafe_cell_new)]
[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 E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bare-metal`.
[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" "4cc3a0c6ade52807b521a39a898b85cfc2254a52f31dd5b228cce18d17e5786f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cc3a0c6ade52807b521a39a898b85cfc2254a52f31dd5b228cce18d17e5786f", kill_on_drop: false }`
[INFO] [stdout] 4cc3a0c6ade52807b521a39a898b85cfc2254a52f31dd5b228cce18d17e5786f