[INFO] fetching crate pygamer-panic-led 0.1.0...
[INFO] checking pygamer-panic-led-0.1.0 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate pygamer-panic-led 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate pygamer-panic-led 0.1.0 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pygamer-panic-led 0.1.0
[INFO] finished tweaking crates.io crate pygamer-panic-led 0.1.0
[INFO] tweaked toml for crates.io crate pygamer-panic-led 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b86aa45f6ed6d8503af514381a7678881bf2081a3b6f6b4ac068d43a8be4fe37
[INFO] running `Command { std: "docker" "start" "-a" "b86aa45f6ed6d8503af514381a7678881bf2081a3b6f6b4ac068d43a8be4fe37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b86aa45f6ed6d8503af514381a7678881bf2081a3b6f6b4ac068d43a8be4fe37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b86aa45f6ed6d8503af514381a7678881bf2081a3b6f6b4ac068d43a8be4fe37", kill_on_drop: false }`
[INFO] [stdout] b86aa45f6ed6d8503af514381a7678881bf2081a3b6f6b4ac068d43a8be4fe37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be6c6f443b52166a0dff61974689494320e5a6add3da68b5e82b7e7bb70b8284
[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" "be6c6f443b52166a0dff61974689494320e5a6add3da68b5e82b7e7bb70b8284", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling atsamd51j v0.8.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling pygamer v0.5.1
[INFO] [stderr]     Checking rgb v0.8.27
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking embedded-hal v0.2.5
[INFO] [stderr]     Checking embedded-graphics v0.6.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking smart-leds-trait v0.2.1
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking ws2812-timer-delay v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking aligned v0.3.5
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking cortex-m v0.7.3
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking cortex-m v0.6.7
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking st7735-lcd v0.7.2
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]     Checking cortex-m-rt v0.6.14
[INFO] [stderr]     Checking atsamd-hal v0.10.1
[INFO] [stderr]     Checking pygamer-panic-led v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]    = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/dfd7b8d03fb93d0e03147d28b3be6d93260fa94d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-37fdd654777c296f.rlib
[INFO] [stdout]    = note: second definition in the local crate (`pygamer_panic_led`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pygamer-panic-led`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "be6c6f443b52166a0dff61974689494320e5a6add3da68b5e82b7e7bb70b8284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be6c6f443b52166a0dff61974689494320e5a6add3da68b5e82b7e7bb70b8284", kill_on_drop: false }`
[INFO] [stdout] be6c6f443b52166a0dff61974689494320e5a6add3da68b5e82b7e7bb70b8284