[INFO] cloning repository https://github.com/nallar/BluePillKeyboard
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nallar/BluePillKeyboard" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnallar%2FBluePillKeyboard", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnallar%2FBluePillKeyboard'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc50dc29778553c8e0d9e66e70ac3431aee0a244
[INFO] checking nallar/BluePillKeyboard against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnallar%2FBluePillKeyboard" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nallar/BluePillKeyboard on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/.cargo/config
[INFO] started tweaking git repo https://github.com/nallar/BluePillKeyboard
[INFO] finished tweaking git repo https://github.com/nallar/BluePillKeyboard
[INFO] tweaked toml for git repo https://github.com/nallar/BluePillKeyboard written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/nallar/BluePillKeyboard already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rtfm-core v0.2.0
[INFO] [stderr]   Downloaded rustc_version v0.2.1
[INFO] [stderr]   Downloaded untagged-option v0.1.1
[INFO] [stderr]   Downloaded cortex-m-rtfm v0.3.1
[INFO] [stderr]   Downloaded embedded-hal v0.1.0
[INFO] [stderr]   Downloaded cortex-m v0.4.2
[INFO] [stderr]   Downloaded cortex-m-rtfm-macros v0.3.0
[INFO] [stderr]   Downloaded stm32f103xx v0.8.0
[INFO] [stderr]   Downloaded num-traits v0.1.42
[INFO] [stderr]   Downloaded cast v0.2.2
[INFO] [stderr]   Downloaded cortex-m-rt v0.3.12
[INFO] [stderr]   Downloaded rtfm-syntax v0.2.1
[INFO] [stderr]   Downloaded nb v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", 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] 881cc499533cce99f060dc84e540f338b318f8b4c89a503be33857418ef21be9
[INFO] running `Command { std: "docker" "start" "-a" "881cc499533cce99f060dc84e540f338b318f8b4c89a503be33857418ef21be9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "881cc499533cce99f060dc84e540f338b318f8b4c89a503be33857418ef21be9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "881cc499533cce99f060dc84e540f338b318f8b4c89a503be33857418ef21be9", kill_on_drop: false }`
[INFO] [stdout] 881cc499533cce99f060dc84e540f338b318f8b4c89a503be33857418ef21be9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0dc46734c2f64d7b1e47f7f0fd19bafe097c8b10242b9a64b8f2f0c451c96d6b
[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" "0dc46734c2f64d7b1e47f7f0fd19bafe097c8b10242b9a64b8f2f0c451c96d6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling cc v1.0.4
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]    Compiling num-traits v0.1.42
[INFO] [stderr]     Checking bare-metal v0.1.1
[INFO] [stderr]     Checking aligned v0.1.1
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.5
[INFO] [stderr]    Compiling cortex-m v0.4.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling cortex-m v0.3.1
[INFO] [stderr]    Compiling cortex-m-rtfm v0.3.1
[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" "0dc46734c2f64d7b1e47f7f0fd19bafe097c8b10242b9a64b8f2f0c451c96d6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dc46734c2f64d7b1e47f7f0fd19bafe097c8b10242b9a64b8f2f0c451c96d6b", kill_on_drop: false }`
[INFO] [stdout] 0dc46734c2f64d7b1e47f7f0fd19bafe097c8b10242b9a64b8f2f0c451c96d6b