[INFO] fetching crate panic_rtt 0.3.0...
[INFO] testing panic_rtt-0.3.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate panic_rtt 0.3.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate panic_rtt 0.3.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate panic_rtt 0.3.0
[INFO] finished tweaking crates.io crate panic_rtt 0.3.0
[INFO] tweaked toml for crates.io crate panic_rtt 0.3.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jlink_rtt v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "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] e3d7b6bc8e0264023143d3a9b389574e2c7743c95d9fedd18cab13eb15f8efd1
[INFO] running `Command { std: "docker" "start" "-a" "e3d7b6bc8e0264023143d3a9b389574e2c7743c95d9fedd18cab13eb15f8efd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3d7b6bc8e0264023143d3a9b389574e2c7743c95d9fedd18cab13eb15f8efd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3d7b6bc8e0264023143d3a9b389574e2c7743c95d9fedd18cab13eb15f8efd1", kill_on_drop: false }`
[INFO] [stdout] e3d7b6bc8e0264023143d3a9b389574e2c7743c95d9fedd18cab13eb15f8efd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 252bba912f54b40769e046751ecb41c236926d1f6c0a693daa0215cc596a7361
[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" "252bba912f54b40769e046751ecb41c236926d1f6c0a693daa0215cc596a7361", kill_on_drop: false }`
[INFO] [stderr]    Compiling jlink_rtt v0.2.0
[INFO] [stderr]    Compiling cortex-m v0.6.7
[INFO] [stderr]    Compiling panic_rtt v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.22s
[INFO] running `Command { std: "docker" "inspect" "252bba912f54b40769e046751ecb41c236926d1f6c0a693daa0215cc596a7361", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "252bba912f54b40769e046751ecb41c236926d1f6c0a693daa0215cc596a7361", kill_on_drop: false }`
[INFO] [stdout] 252bba912f54b40769e046751ecb41c236926d1f6c0a693daa0215cc596a7361
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fdeb3c670a5d3285b1fb96d3ba24f884bb7c4b360c08ff57fcd319048fd8f1ed
[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" "fdeb3c670a5d3285b1fb96d3ba24f884bb7c4b360c08ff57fcd319048fd8f1ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling panic_rtt v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/lib.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | 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/beta-2022-02-22-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-ff9290e971253a38.so, /opt/rustwide/rustup-home/toolchains/beta-2022-02-22-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-ff9290e971253a38.rlib
[INFO] [stdout]    = note: second definition in the local crate (`panic_rtt`)
[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_rtt` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "fdeb3c670a5d3285b1fb96d3ba24f884bb7c4b360c08ff57fcd319048fd8f1ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdeb3c670a5d3285b1fb96d3ba24f884bb7c4b360c08ff57fcd319048fd8f1ed", kill_on_drop: false }`
[INFO] [stdout] fdeb3c670a5d3285b1fb96d3ba24f884bb7c4b360c08ff57fcd319048fd8f1ed