[INFO] fetching crate stm32f030_cf 0.0.1...
[INFO] checking stm32f030_cf-0.0.1 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate stm32f030_cf 0.0.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate stm32f030_cf 0.0.1 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stm32f030_cf 0.0.1
[INFO] finished tweaking crates.io crate stm32f030_cf 0.0.1
[INFO] tweaked toml for crates.io crate stm32f030_cf 0.0.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01881709db855bdd3b4ad1c1757cba095beed696c8c2110179373d3687931452
[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" "01881709db855bdd3b4ad1c1757cba095beed696c8c2110179373d3687931452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01881709db855bdd3b4ad1c1757cba095beed696c8c2110179373d3687931452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01881709db855bdd3b4ad1c1757cba095beed696c8c2110179373d3687931452", kill_on_drop: false }`
[INFO] [stdout] 01881709db855bdd3b4ad1c1757cba095beed696c8c2110179373d3687931452
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4380d416134e8be72ac09030a23504c520c71d8f75ae9a51aca616099b6c64a3
[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" "4380d416134e8be72ac09030a23504c520c71d8f75ae9a51aca616099b6c64a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling stm32f030_cf v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.5
[INFO] [stderr]     Checking cortex-m v0.7.2
[INFO] [stderr]     Checking cortex-m v0.6.7
[INFO] [stderr]     Checking cortex-m v0.5.11
[INFO] [stdout] error: lint `private_no_mangle_statics` has been removed: no longer a warning, `#[no_mangle]` statics always exported
[INFO] [stdout]       --> src/lib.rs:100378:9
[INFO] [stdout]        |
[INFO] [stdout] 100378 | #[allow(private_no_mangle_statics)]
[INFO] [stdout]        |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]        |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]       --> src/lib.rs:3:9
[INFO] [stdout]        |
[INFO] [stdout] 3      | #![deny(warnings)]
[INFO] [stdout]        |         ^^^^^^^^
[INFO] [stdout]        = note: `#[deny(renamed_and_removed_lints)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lint `private_no_mangle_statics` has been removed: no longer a warning, `#[no_mangle]` statics always exported
[INFO] [stdout]       --> src/lib.rs:100378:9
[INFO] [stdout]        |
[INFO] [stdout] 100378 | #[allow(private_no_mangle_statics)]
[INFO] [stdout]        |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]        |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]       --> src/lib.rs:3:9
[INFO] [stdout]        |
[INFO] [stdout] 3      | #![deny(warnings)]
[INFO] [stdout]        |         ^^^^^^^^
[INFO] [stdout]        = note: `#[deny(renamed_and_removed_lints)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stm32f030_cf`
[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] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4380d416134e8be72ac09030a23504c520c71d8f75ae9a51aca616099b6c64a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4380d416134e8be72ac09030a23504c520c71d8f75ae9a51aca616099b6c64a3", kill_on_drop: false }`
[INFO] [stdout] 4380d416134e8be72ac09030a23504c520c71d8f75ae9a51aca616099b6c64a3