[INFO] fetching crate wio_lite_mg126 0.2.0...
[INFO] checking wio_lite_mg126-0.2.0 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate wio_lite_mg126 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate wio_lite_mg126 0.2.0 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/.cargo/config
[INFO] started tweaking crates.io crate wio_lite_mg126 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate wio_lite_mg126 0.2.0
[INFO] tweaked toml for crates.io crate wio_lite_mg126 0.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate wio_lite_mg126 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80ff7c861b5f42e53c7ba59c465544270dd22a12fbaeb5c13709ce87b0489d9d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "80ff7c861b5f42e53c7ba59c465544270dd22a12fbaeb5c13709ce87b0489d9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80ff7c861b5f42e53c7ba59c465544270dd22a12fbaeb5c13709ce87b0489d9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80ff7c861b5f42e53c7ba59c465544270dd22a12fbaeb5c13709ce87b0489d9d", kill_on_drop: false }`
[INFO] [stdout] 80ff7c861b5f42e53c7ba59c465544270dd22a12fbaeb5c13709ce87b0489d9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 263f3e27baf2f78f6151735c4691dcfd6b22d89888227dd51283dd08dce03fbe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "263f3e27baf2f78f6151735c4691dcfd6b22d89888227dd51283dd08dce03fbe", kill_on_drop: false }`
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]    Compiling atsamd21g v0.9.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]    Compiling wio_lite_mg126 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking as-slice v0.1.4
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]     Checking aligned v0.3.4
[INFO] [stderr]     Checking cortex-m v0.6.4
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]     Checking cortex-m-rt v0.6.13
[INFO] [stderr]     Checking atsamd-hal v0.12.0
[INFO] [stdout] error: duplicate lang item in crate `std` (which `test` depends on): `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_halt` (which `wio_lite_mg126` depends on)
[INFO] [stdout]   = note: first definition in `panic_halt` loaded from /opt/rustwide/target/debug/deps/libpanic_halt-b1fbebaf74f20b94.rmeta
[INFO] [stdout]   = note: second definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-8ca495943bae7405.rlib
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wio_lite_mg126`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "263f3e27baf2f78f6151735c4691dcfd6b22d89888227dd51283dd08dce03fbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "263f3e27baf2f78f6151735c4691dcfd6b22d89888227dd51283dd08dce03fbe", kill_on_drop: false }`
[INFO] [stdout] 263f3e27baf2f78f6151735c4691dcfd6b22d89888227dd51283dd08dce03fbe