[INFO] fetching crate itsybitsy_m4 0.7.0...
[INFO] checking itsybitsy_m4-0.7.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate itsybitsy_m4 0.7.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate itsybitsy_m4 0.7.0 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate itsybitsy_m4 0.7.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate itsybitsy_m4 0.7.0
[INFO] tweaked toml for crates.io crate itsybitsy_m4 0.7.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate itsybitsy_m4 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded embedded-hal v0.2.6
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.3.7
[INFO] [stderr]   Downloaded panic-semihosting v0.5.6
[INFO] [stderr]   Downloaded usb-device v0.2.8
[INFO] [stderr]   Downloaded rgb v0.8.29
[INFO] [stderr]   Downloaded smart-leds-trait v0.2.1
[INFO] [stderr]   Downloaded usbd-serial v0.1.1
[INFO] [stderr]   Downloaded apa102-spi v0.3.2
[INFO] [stderr]   Downloaded jlink_rtt v0.2.0
[INFO] [stderr]   Downloaded bitbang-hal v0.3.2
[INFO] [stderr]   Downloaded seq-macro v0.2.2
[INFO] [stderr]   Downloaded hash32 v0.1.1
[INFO] [stderr]   Downloaded aligned v0.3.5
[INFO] [stderr]   Downloaded cortex-m v0.6.7
[INFO] [stderr]   Downloaded rtic-core v0.3.1
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.1
[INFO] [stderr]   Downloaded atsamd-hal v0.14.0
[INFO] [stderr]   Downloaded atsamd51g v0.11.0
[INFO] [stderr]   Downloaded rtic-syntax v0.4.0
[INFO] [stderr]   Downloaded heapless v0.6.1
[INFO] [stderr]   Downloaded cortex-m-rtic v0.5.9
[INFO] [stderr]   Downloaded cortex-m v0.7.3
[INFO] [stderr]   Downloaded cortex-m-rtic-macros v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0035b1359f45699cc4020e4a4b1a33ba0dbfe5129eb44636c8bb18b5e2d156c
[INFO] running `Command { std: "docker" "start" "-a" "c0035b1359f45699cc4020e4a4b1a33ba0dbfe5129eb44636c8bb18b5e2d156c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0035b1359f45699cc4020e4a4b1a33ba0dbfe5129eb44636c8bb18b5e2d156c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0035b1359f45699cc4020e4a4b1a33ba0dbfe5129eb44636c8bb18b5e2d156c", kill_on_drop: false }`
[INFO] [stdout] c0035b1359f45699cc4020e4a4b1a33ba0dbfe5129eb44636c8bb18b5e2d156c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 963cd66ed7f31d48a1dafa88aea59217a60612a0b1344a7a0b4918a3e0a78b37
[INFO] running `Command { std: "docker" "start" "-a" "963cd66ed7f31d48a1dafa88aea59217a60612a0b1344a7a0b4918a3e0a78b37", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling cortex-m v0.7.3
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m-rt v0.7.1
[INFO] [stderr]     Checking bytemuck v1.7.2
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling atsamd51g v0.11.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stderr]    Compiling cortex-m v0.6.7
[INFO] [stderr]     Checking embedded-hal v0.2.6
[INFO] [stderr]     Checking rgb v0.8.29
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling heapless v0.6.1
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling cortex-m-rtic v0.5.9
[INFO] [stderr]     Checking replace_with v0.1.7
[INFO] [stderr]     Checking smart-leds-trait v0.2.1
[INFO] [stderr]    Compiling seq-macro v0.2.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling itsybitsy_m4 v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking bitbang-hal v0.3.2
[INFO] [stderr]     Checking smart-leds v0.3.0
[INFO] [stderr]     Checking apa102-spi v0.3.2
[INFO] [stderr]     Checking rtic-core v0.3.1
[INFO] [stderr]     Checking usb-device v0.2.8
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking usbd-serial v0.1.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking panic-semihosting v0.5.6
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking aligned v0.3.5
[INFO] [stderr]    Compiling rtic-syntax v0.4.0
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]    Compiling modular-bitfield-impl v0.11.2
[INFO] [stderr]    Compiling cortex-m-rtic-macros v0.5.3
[INFO] [stderr]     Checking modular-bitfield v0.11.2
[INFO] [stderr]     Checking atsamd-hal v0.14.0
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]   --> examples/spi.rs:66:41
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 let _ = nb::block!(&mut serial.write(*c));
[INFO] [stdout]    |                         ----------------^^^^^^^^^^^^^^^^-
[INFO] [stdout]    |                         |               |
[INFO] [stdout]    |                         |               creates a temporary value which is freed while still in use
[INFO] [stdout]    |                         temporary value is freed at the end of this statement
[INFO] [stdout]    |                         borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `itsybitsy_m4` (example "dotstar") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0716`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `itsybitsy_m4` (example "spi") due to 3 previous errors
[INFO] [stderr] error: could not compile `itsybitsy_m4` (example "blinky_basic") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "963cd66ed7f31d48a1dafa88aea59217a60612a0b1344a7a0b4918a3e0a78b37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "963cd66ed7f31d48a1dafa88aea59217a60612a0b1344a7a0b4918a3e0a78b37", kill_on_drop: false }`
[INFO] [stdout] 963cd66ed7f31d48a1dafa88aea59217a60612a0b1344a7a0b4918a3e0a78b37
