[INFO] fetching crate circuit_playground_express 0.11.1...
[INFO] checking circuit_playground_express-0.11.1 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate circuit_playground_express 0.11.1 into /workspace/builds/worker-0-tc2/source
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate circuit_playground_express 0.11.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate circuit_playground_express 0.11.1
[INFO] tweaked toml for crates.io crate circuit_playground_express 0.11.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate circuit_playground_express 0.11.1 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate circuit_playground_express 0.11.1 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7612e9a2bf609862550e1e57a7242d6ae088d1d30d02fbafab876723ab7126ab
[INFO] running `Command { std: "docker" "start" "-a" "7612e9a2bf609862550e1e57a7242d6ae088d1d30d02fbafab876723ab7126ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7612e9a2bf609862550e1e57a7242d6ae088d1d30d02fbafab876723ab7126ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7612e9a2bf609862550e1e57a7242d6ae088d1d30d02fbafab876723ab7126ab", kill_on_drop: false }`
[INFO] [stdout] 7612e9a2bf609862550e1e57a7242d6ae088d1d30d02fbafab876723ab7126ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41da4efbda9256c75712bceab3cf93e6ff3679e19627b932a7b4a093fd8d774a
[INFO] running `Command { std: "docker" "start" "-a" "41da4efbda9256c75712bceab3cf93e6ff3679e19627b932a7b4a093fd8d774a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.88
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]     Checking bytemuck v1.19.0
[INFO] [stderr]    Compiling atsamd21g v0.11.0
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking rgb v0.8.50
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking volatile-register v0.2.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling seq-macro v0.2.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling circuit_playground_express v0.11.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking replace_with v0.1.7
[INFO] [stderr]     Checking usb-device v0.2.9
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking usbd-serial v0.1.1
[INFO] [stderr]     Checking smart-leds-trait v0.2.1
[INFO] [stderr]     Checking ws2812-timer-delay v0.3.0
[INFO] [stderr]     Checking smart-leds v0.3.0
[INFO] [stderr]     Checking panic-semihosting v0.5.6
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]    Compiling modular-bitfield-impl v0.11.2
[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] [stderr] error: could not compile `circuit_playground_express` (example "neopixel_rainbow") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `circuit_playground_express` (example "blinky_basic") 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 `circuit_playground_express` (example "uart") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "41da4efbda9256c75712bceab3cf93e6ff3679e19627b932a7b4a093fd8d774a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41da4efbda9256c75712bceab3cf93e6ff3679e19627b932a7b4a093fd8d774a", kill_on_drop: false }`
[INFO] [stdout] 41da4efbda9256c75712bceab3cf93e6ff3679e19627b932a7b4a093fd8d774a