[INFO] fetching crate stabilizer 0.3.0...
[INFO] checking stabilizer-0.3.0 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate stabilizer 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate stabilizer 0.3.0 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config
[INFO] started tweaking crates.io crate stabilizer 0.3.0
[INFO] finished tweaking crates.io crate stabilizer 0.3.0
[INFO] tweaked toml for crates.io crate stabilizer 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate stabilizer 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "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 stable_deref_trait v1.1.1
[INFO] [stderr]   Downloaded panic-halt v0.2.0
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.3.5
[INFO] [stderr]   Downloaded as-slice v0.1.2
[INFO] [stderr]   Downloaded r0 v0.2.2
[INFO] [stderr]   Downloaded panic-semihosting v0.5.3
[INFO] [stderr]   Downloaded aligned v0.3.2
[INFO] [stderr]   Downloaded smoltcp v0.6.0
[INFO] [stderr]   Downloaded rtfm-core v0.3.0
[INFO] [stderr]   Downloaded serde_derive v1.0.104
[INFO] [stderr]   Downloaded rtfm-syntax v0.4.0
[INFO] [stderr]   Downloaded indexmap v1.3.1
[INFO] [stderr]   Downloaded cortex-m v0.6.2
[INFO] [stderr]   Downloaded serde-json-core v0.1.0
[INFO] [stderr]   Downloaded volatile-register v0.2.0
[INFO] [stderr]   Downloaded heapless v0.5.2
[INFO] [stderr]   Downloaded cortex-m-rtfm-macros v0.5.0
[INFO] [stderr]   Downloaded hash32 v0.1.1
[INFO] [stderr]   Downloaded syn v1.0.14
[INFO] [stderr]   Downloaded proc-macro2 v1.0.8
[INFO] [stderr]   Downloaded bare-metal v0.2.5
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.1.7
[INFO] [stderr]   Downloaded vcell v0.1.2
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.11
[INFO] [stderr]   Downloaded managed v0.7.1
[INFO] [stderr]   Downloaded cortex-m-log v0.6.1
[INFO] [stderr]   Downloaded cortex-m-rtfm v0.5.1
[INFO] [stderr]   Downloaded generic-array v0.13.2
[INFO] [stderr]   Downloaded stm32h7 v0.9.0
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9966a65208707d30740aa4b95d3b110a26374e2a979a1055ed5ca8c7b9841f51
[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" "9966a65208707d30740aa4b95d3b110a26374e2a979a1055ed5ca8c7b9841f51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9966a65208707d30740aa4b95d3b110a26374e2a979a1055ed5ca8c7b9841f51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9966a65208707d30740aa4b95d3b110a26374e2a979a1055ed5ca8c7b9841f51", kill_on_drop: false }`
[INFO] [stdout] 9966a65208707d30740aa4b95d3b110a26374e2a979a1055ed5ca8c7b9841f51
[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=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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a987f7977d84bd34e87587f4db186c213e6ce830ba324fdbc71ce0c4e0c47473
[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" "a987f7977d84bd34e87587f4db186c213e6ce830ba324fdbc71ce0c4e0c47473", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling cortex-m v0.6.2
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking vcell v0.1.2
[INFO] [stderr]    Compiling heapless v0.5.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.11
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling stm32h7 v0.9.0
[INFO] [stderr]    Compiling cortex-m-log v0.6.1
[INFO] [stderr]    Compiling cortex-m-rtfm v0.5.1
[INFO] [stderr]     Checking managed v0.7.1
[INFO] [stderr]     Checking rtfm-core v0.3.0
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling indexmap v1.3.1
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking smoltcp v0.6.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking as-slice v0.1.2
[INFO] [stderr]     Checking aligned v0.3.2
[INFO] [stderr]    Compiling rtfm-syntax v0.4.0
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.7
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling cortex-m-rtfm-macros v0.5.0
[INFO] [stderr] error: could not compile `stm32h7`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name stm32h7 --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stm32h7-0.9.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --cfg 'feature="cortex-m-rt"' --cfg 'feature="default"' --cfg 'feature="rt"' --cfg 'feature="stm32h743"' -C metadata=434fab9131cd4cb6 -C extra-filename=-434fab9131cd4cb6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bare_metal=/opt/rustwide/target/debug/deps/libbare_metal-b501a6cc972af519.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-2793a89078fad9f4.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-5b20fd40c1815ab8.rmeta --extern vcell=/opt/rustwide/target/debug/deps/libvcell-96029831d38e97b5.rmeta --cap-lints allow --cap-lints=forbid -L /opt/rustwide/target/debug/build/stm32h7-fd5df6e7a1f27216/out -L /opt/rustwide/target/debug/build/cortex-m-rt-c9c25bbe7270064a/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a987f7977d84bd34e87587f4db186c213e6ce830ba324fdbc71ce0c4e0c47473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a987f7977d84bd34e87587f4db186c213e6ce830ba324fdbc71ce0c4e0c47473", kill_on_drop: false }`
[INFO] [stdout] a987f7977d84bd34e87587f4db186c213e6ce830ba324fdbc71ce0c4e0c47473