[INFO] fetching crate cortex-m 0.7.6...
[INFO] testing cortex-m-0.7.6 against try#8dae881ac166f8debe04e17604ebbe2ab47083fd+target=i686-unknown-linux-musl for musl_upgrade_test
[INFO] extracting crate cortex-m 0.7.6 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate cortex-m 0.7.6 on toolchain 8dae881ac166f8debe04e17604ebbe2ab47083fd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8dae881ac166f8debe04e17604ebbe2ab47083fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/.cargo/config
[INFO] started tweaking crates.io crate cortex-m 0.7.6
[INFO] finished tweaking crates.io crate cortex-m 0.7.6
[INFO] tweaked toml for crates.io crate cortex-m 0.7.6 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8dae881ac166f8debe04e17604ebbe2ab47083fd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8dae881ac166f8debe04e17604ebbe2ab47083fd" "fetch" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded critical-section v1.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+8dae881ac166f8debe04e17604ebbe2ab47083fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f722c6df040968ea139a050143208f9146e0c490163e47b4307bb5f31bdce661
[INFO] running `Command { std: "docker" "start" "-a" "f722c6df040968ea139a050143208f9146e0c490163e47b4307bb5f31bdce661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f722c6df040968ea139a050143208f9146e0c490163e47b4307bb5f31bdce661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f722c6df040968ea139a050143208f9146e0c490163e47b4307bb5f31bdce661", kill_on_drop: false }`
[INFO] [stdout] f722c6df040968ea139a050143208f9146e0c490163e47b4307bb5f31bdce661
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "RUSTDOCFLAGS=--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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+8dae881ac166f8debe04e17604ebbe2ab47083fd" "build" "--frozen" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] a8242bf3073b47da111c79f33a3dff37f82d58c42cf7e7ae7bff49c49fa9002c
[INFO] running `Command { std: "docker" "start" "-a" "a8242bf3073b47da111c79f33a3dff37f82d58c42cf7e7ae7bff49c49fa9002c", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling cortex-m v0.7.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling volatile-register v0.2.1
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.26s
[INFO] running `Command { std: "docker" "inspect" "a8242bf3073b47da111c79f33a3dff37f82d58c42cf7e7ae7bff49c49fa9002c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8242bf3073b47da111c79f33a3dff37f82d58c42cf7e7ae7bff49c49fa9002c", kill_on_drop: false }`
[INFO] [stdout] a8242bf3073b47da111c79f33a3dff37f82d58c42cf7e7ae7bff49c49fa9002c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "RUSTDOCFLAGS=--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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+8dae881ac166f8debe04e17604ebbe2ab47083fd" "test" "--frozen" "--no-run" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 42f505b1578eafe1edb798e810d070fc7ea6d3f1bb7769693082dcf30c403f5b
[INFO] running `Command { std: "docker" "start" "-a" "42f505b1578eafe1edb798e810d070fc7ea6d3f1bb7769693082dcf30c403f5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.7.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no associated item named `PTR` found for struct `FPU` in the current scope
[INFO] [stdout]    --> src/peripheral/test.rs:71:50
[INFO] [stdout]     |
[INFO] [stdout] 71  |     let fpu = unsafe { &*crate::peripheral::FPU::PTR };
[INFO] [stdout]     |                                                  ^^^ associated item not found in `FPU`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/peripheral/mod.rs:408:1
[INFO] [stdout]     |
[INFO] [stdout] 408 | pub struct FPU {
[INFO] [stdout]     | -------------- associated item `PTR` not found for this struct
[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 E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cortex-m` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "42f505b1578eafe1edb798e810d070fc7ea6d3f1bb7769693082dcf30c403f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42f505b1578eafe1edb798e810d070fc7ea6d3f1bb7769693082dcf30c403f5b", kill_on_drop: false }`
[INFO] [stdout] 42f505b1578eafe1edb798e810d070fc7ea6d3f1bb7769693082dcf30c403f5b