[INFO] crate circuit_playground_express 0.5.0 is already in cache
[INFO] testing circuit_playground_express-0.5.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate circuit_playground_express 0.5.0 into work/builds/worker-1/source
[INFO] validating manifest of crates.io crate circuit_playground_express 0.5.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate circuit_playground_express 0.5.0
[INFO] finished tweaking crates.io crate circuit_playground_express 0.5.0
[INFO] tweaked toml for crates.io crate circuit_playground_express 0.5.0 written to work/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate circuit_playground_express 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] f42dde8e00616ea4f4bbf2994c5ba621af2d36ac4108286464475e0ec1ea1f0e
[INFO] running `"docker" "start" "-a" "f42dde8e00616ea4f4bbf2994c5ba621af2d36ac4108286464475e0ec1ea1f0e"`
[INFO] [stderr]    Compiling atsamd21g18a v0.6.0
[INFO] [stderr]    Compiling nb v0.1.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling circuit_playground_express v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling cortex-m-rt v0.6.10
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling embedded-hal v0.2.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.9
[INFO] [stderr]    Compiling paste-impl v0.1.6
[INFO] [stderr]    Compiling paste v0.1.6
[INFO] [stderr]    Compiling atsamd-hal v0.7.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.29s
[INFO] running `"docker" "inspect" "f42dde8e00616ea4f4bbf2994c5ba621af2d36ac4108286464475e0ec1ea1f0e"`
[INFO] running `"docker" "rm" "-f" "f42dde8e00616ea4f4bbf2994c5ba621af2d36ac4108286464475e0ec1ea1f0e"`
[INFO] [stdout] f42dde8e00616ea4f4bbf2994c5ba621af2d36ac4108286464475e0ec1ea1f0e
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a1a05653ffb801afa61fcebe193f7a308f8704a1984db52b2b25db823bd58e91
[INFO] running `"docker" "start" "-a" "a1a05653ffb801afa61fcebe193f7a308f8704a1984db52b2b25db823bd58e91"`
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling circuit_playground_express v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: language item required, but not found: `eh_personality`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `circuit_playground_express`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a1a05653ffb801afa61fcebe193f7a308f8704a1984db52b2b25db823bd58e91"`
[INFO] running `"docker" "rm" "-f" "a1a05653ffb801afa61fcebe193f7a308f8704a1984db52b2b25db823bd58e91"`
[INFO] [stdout] a1a05653ffb801afa61fcebe193f7a308f8704a1984db52b2b25db823bd58e91