[INFO] fetching crate feather_m4 0.15.0...
[INFO] checking feather_m4-0.15.0 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate feather_m4 0.15.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate feather_m4 0.15.0 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate feather_m4 0.15.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate feather_m4 0.15.0
[INFO] tweaked toml for crates.io crate feather_m4 0.15.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate feather_m4 0.15.0 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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded panic-semihosting v0.5.6
[INFO] [stderr]   Downloaded ws2812-timer-delay v0.3.0
[INFO] [stderr]   Downloaded smart-leds-trait v0.2.1
[INFO] [stderr]   Downloaded cortex-m-rtic v0.6.0-rc.4
[INFO] [stderr]   Downloaded atsamd-hal-macros v0.2.2
[INFO] [stderr]   Downloaded modular-bitfield-impl v0.11.2
[INFO] [stderr]   Downloaded embassy-sync v0.6.1
[INFO] [stderr]   Downloaded modular-bitfield v0.11.2
[INFO] [stderr]   Downloaded seq-macro v0.3.5
[INFO] [stderr]   Downloaded rtic-syntax v0.5.0-rc.2
[INFO] [stderr]   Downloaded cortex-m-rtic-macros v0.6.0-rc.4
[INFO] [stderr]   Downloaded portable-atomic v1.10.0
[INFO] [stderr]   Downloaded rtic-core v0.3.1
[INFO] [stderr]   Downloaded rtic-monotonic v0.1.0-rc.2
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.3.7
[INFO] [stderr]   Downloaded smart-leds v0.3.0
[INFO] [stderr]   Downloaded rgb v0.8.50
[INFO] [stderr]   Downloaded embedded-io-async v0.6.1
[INFO] [stderr]   Downloaded syn v2.0.89
[INFO] [stderr]   Downloaded atsamd-hal v0.20.0
[INFO] [stderr]   Downloaded atsamd51j v0.14.1
[INFO] [stderr]   Downloaded libc v0.2.166
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8958950e3c4fcc60a0cce5573300468fba1f4ea73e11260e41fb4124368d899
[INFO] running `Command { std: "docker" "start" "-a" "f8958950e3c4fcc60a0cce5573300468fba1f4ea73e11260e41fb4124368d899", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8958950e3c4fcc60a0cce5573300468fba1f4ea73e11260e41fb4124368d899", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8958950e3c4fcc60a0cce5573300468fba1f4ea73e11260e41fb4124368d899", kill_on_drop: false }`
[INFO] [stdout] f8958950e3c4fcc60a0cce5573300468fba1f4ea73e11260e41fb4124368d899
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53435f4a32d778958c55931c1ca108ca0d1da660ad9d139b1319f5b7f26ec39b
[INFO] running `Command { std: "docker" "start" "-a" "53435f4a32d778958c55931c1ca108ca0d1da660ad9d139b1319f5b7f26ec39b", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling hashbrown v0.15.2
[INFO] [stderr]     Checking critical-section v1.2.0
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling serde v1.0.215
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling cortex-m-rt v0.7.5
[INFO] [stderr]    Compiling syn v2.0.89
[INFO] [stderr]    Compiling ryu v1.0.18
[INFO] [stderr]    Compiling itoa v1.0.14
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking volatile-register v0.2.2
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling atsamd51j v0.14.1
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]     Checking bytemuck v1.20.0
[INFO] [stderr]    Compiling portable-atomic v1.10.0
[INFO] [stderr]    Compiling phf v0.11.2
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]     Checking cipher v0.3.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling modular-bitfield-impl v0.11.2
[INFO] [stderr]    Compiling litrs v0.4.1
[INFO] [stderr]     Checking embedded-hal v1.0.0
[INFO] [stderr]     Checking rgb v0.8.50
[INFO] [stderr]     Checking embedded-io v0.6.1
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking gcd v2.3.0
[INFO] [stderr]     Checking embedded-hal-nb v1.0.0
[INFO] [stderr]     Checking aes v0.7.5
[INFO] [stderr]     Checking fugit v0.3.7
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling indexmap v2.6.0
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]     Checking smart-leds-trait v0.2.1
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling cortex-m-rtic v0.6.0-rc.4
[INFO] [stderr]    Compiling feather_m4 v0.15.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling seq-macro v0.3.5
[INFO] [stderr]     Checking rtic-monotonic v0.1.0-rc.2
[INFO] [stderr]     Checking rtic-core v0.3.1
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]     Checking ws2812-timer-delay v0.3.0
[INFO] [stderr]     Checking smart-leds v0.3.0
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]     Checking usb-device v0.3.2
[INFO] [stderr]     Checking panic-semihosting v0.5.6
[INFO] [stderr]    Compiling rtic-syntax v0.5.0-rc.2
[INFO] [stderr]     Checking usbd-serial v0.2.2
[INFO] [stderr]     Checking modular-bitfield v0.11.2
[INFO] [stderr]    Compiling cortex-m-rtic-macros v0.6.0-rc.4
[INFO] [stderr]    Compiling serde_derive v1.0.215
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.5
[INFO] [stderr]    Compiling serde_yaml v0.9.34+deprecated
[INFO] [stderr]    Compiling atsamd-hal-macros v0.2.2
[INFO] [stderr]     Checking atsamd-hal v0.20.0
[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: 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: 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: 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: 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: 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: 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: 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: 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 `feather_m4` (example "neopixel_rainbow") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `feather_m4` (example "blinky_basic") due to 1 previous error
[INFO] [stderr] error: could not compile `feather_m4` (example "trng") due to 1 previous error
[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 `feather_m4` (example "timers") due to 1 previous error
[INFO] [stderr] error: could not compile `feather_m4` (example "pwm") due to 1 previous error
[INFO] [stderr] error: could not compile `feather_m4` (example "uart_poll_echo") due to 1 previous error
[INFO] [stderr] error: could not compile `feather_m4` (example "uart") due to 1 previous error
[INFO] [stderr] error: could not compile `feather_m4` (example "sleeping_timer_rtc") due to 1 previous error
[INFO] [stderr] error: could not compile `feather_m4` (example "serial") due to 1 previous error
[INFO] [stderr] error: could not compile `feather_m4` (example "clocking_v2") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "53435f4a32d778958c55931c1ca108ca0d1da660ad9d139b1319f5b7f26ec39b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53435f4a32d778958c55931c1ca108ca0d1da660ad9d139b1319f5b7f26ec39b", kill_on_drop: false }`
[INFO] [stdout] 53435f4a32d778958c55931c1ca108ca0d1da660ad9d139b1319f5b7f26ec39b
