[INFO] fetching crate panic-tracing-rtt 0.1.0...
[INFO] testing panic-tracing-rtt-0.1.0 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate panic-tracing-rtt 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate panic-tracing-rtt 0.1.0
[INFO] finished tweaking crates.io crate panic-tracing-rtt 0.1.0
[INFO] tweaked toml for crates.io crate panic-tracing-rtt 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate panic-tracing-rtt 0.1.0 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rtt-target v0.5.0
[INFO] [stderr]   Downloaded tracing-rtt v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fb25b02932055c447c83c6d6a1450d3ff420b2f03d0c8559daf9786ac4a56dd
[INFO] running `Command { std: "docker" "start" "-a" "3fb25b02932055c447c83c6d6a1450d3ff420b2f03d0c8559daf9786ac4a56dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fb25b02932055c447c83c6d6a1450d3ff420b2f03d0c8559daf9786ac4a56dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fb25b02932055c447c83c6d6a1450d3ff420b2f03d0c8559daf9786ac4a56dd", kill_on_drop: false }`
[INFO] [stdout] 3fb25b02932055c447c83c6d6a1450d3ff420b2f03d0c8559daf9786ac4a56dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 943dfd127343adc7d63d908bc96023b14f0c9b53e58799c336c917b28a3adec2
[INFO] running `Command { std: "docker" "start" "-a" "943dfd127343adc7d63d908bc96023b14f0c9b53e58799c336c917b28a3adec2", kill_on_drop: false }`
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling rtt-target v0.5.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling tracing-rtt v0.1.1
[INFO] [stderr]    Compiling panic-tracing-rtt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "943dfd127343adc7d63d908bc96023b14f0c9b53e58799c336c917b28a3adec2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "943dfd127343adc7d63d908bc96023b14f0c9b53e58799c336c917b28a3adec2", kill_on_drop: false }`
[INFO] [stdout] 943dfd127343adc7d63d908bc96023b14f0c9b53e58799c336c917b28a3adec2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 999af5675e57c6d4b4dbd879f2af40d157c7d125bbd5c0a0b2b4c694dad0acd2
[INFO] running `Command { std: "docker" "start" "-a" "999af5675e57c6d4b4dbd879f2af40d157c7d125bbd5c0a0b2b4c694dad0acd2", kill_on_drop: false }`
[INFO] [stderr]    Compiling panic-tracing-rtt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | / fn panic(info: &PanicInfo) -> ! {
[INFO] [stdout] 28 | |     interrupt::disable();
[INFO] [stdout] 29 | |
[INFO] [stdout] 30 | |     tracing::error!("{info}");
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | | }
[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/caccb4d0368bd918ef6668af8e13834d07040417/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-2bfe6d313f1a27d4.so, /opt/rustwide/rustup-home/toolchains/caccb4d0368bd918ef6668af8e13834d07040417/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-2bfe6d313f1a27d4.rlib
[INFO] [stdout]    = note: second definition in the local crate (`panic_tracing_rtt`)
[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-tracing-rtt` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "999af5675e57c6d4b4dbd879f2af40d157c7d125bbd5c0a0b2b4c694dad0acd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "999af5675e57c6d4b4dbd879f2af40d157c7d125bbd5c0a0b2b4c694dad0acd2", kill_on_drop: false }`
[INFO] [stdout] 999af5675e57c6d4b4dbd879f2af40d157c7d125bbd5c0a0b2b4c694dad0acd2