[INFO] fetching crate panic-persist 0.2.1...
[INFO] checking panic-persist-0.2.1 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] extracting crate panic-persist 0.2.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate panic-persist 0.2.1 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate panic-persist 0.2.1
[INFO] finished tweaking crates.io crate panic-persist 0.2.1
[INFO] tweaked toml for crates.io crate panic-persist 0.2.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eed4cd503ab4645c8f8b37743ee89fd01d23683b0a0365b081192e70be2008af
[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" "eed4cd503ab4645c8f8b37743ee89fd01d23683b0a0365b081192e70be2008af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eed4cd503ab4645c8f8b37743ee89fd01d23683b0a0365b081192e70be2008af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eed4cd503ab4645c8f8b37743ee89fd01d23683b0a0365b081192e70be2008af", kill_on_drop: false }`
[INFO] [stdout] eed4cd503ab4645c8f8b37743ee89fd01d23683b0a0365b081192e70be2008af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 1ad35ec7fe8ba4bcb4050ef38a77cbb0a92b46de4316c1f48f8fc64292eb1f68
[INFO] running `Command { std: "docker" "start" "-a" "1ad35ec7fe8ba4bcb4050ef38a77cbb0a92b46de4316c1f48f8fc64292eb1f68", kill_on_drop: false }`
[INFO] [stderr]     Checking panic-persist v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]    --> src/lib.rs:224:1
[INFO] [stdout]     |
[INFO] [stdout] 224 | / fn panic(info: &PanicInfo) -> ! {
[INFO] [stdout] 225 | |     interrupt::disable();
[INFO] [stdout] 226 | |
[INFO] [stdout] 227 | |     writeln!(Ram { offset: 0 }, "{}", info).ok();
[INFO] [stdout] 228 | |
[INFO] [stdout] 229 | |     cortex_m::peripheral::SCB::sys_reset();
[INFO] [stdout] 230 | | }
[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/d990716b6a1fdde1300748828a9c9e79dfd0b898/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-843c4381784de358.rlib
[INFO] [stdout]     = note: second definition in the local crate (`panic_persist`)
[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 `panic-persist`.
[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" "1ad35ec7fe8ba4bcb4050ef38a77cbb0a92b46de4316c1f48f8fc64292eb1f68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ad35ec7fe8ba4bcb4050ef38a77cbb0a92b46de4316c1f48f8fc64292eb1f68", kill_on_drop: false }`
[INFO] [stdout] 1ad35ec7fe8ba4bcb4050ef38a77cbb0a92b46de4316c1f48f8fc64292eb1f68