[INFO] fetching crate panic_rtt 0.3.0... [INFO] testing panic_rtt-0.3.0 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530 [INFO] extracting crate panic_rtt 0.3.0 into /workspace/builds/worker-3/source [INFO] validating manifest of crates.io crate panic_rtt 0.3.0 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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-3/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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] b593037f32b4c5fb82e207fd66da7ba9e3c5a544bd3508219e516ed3736d4d5a [INFO] running `Command { std: "docker" "start" "-a" "b593037f32b4c5fb82e207fd66da7ba9e3c5a544bd3508219e516ed3736d4d5a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b593037f32b4c5fb82e207fd66da7ba9e3c5a544bd3508219e516ed3736d4d5a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b593037f32b4c5fb82e207fd66da7ba9e3c5a544bd3508219e516ed3736d4d5a", kill_on_drop: false }` [INFO] [stdout] b593037f32b4c5fb82e207fd66da7ba9e3c5a544bd3508219e516ed3736d4d5a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--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] 8f130daf262033c7da4f68038fae2c23f8a07364561397a55022644b7331d76d [INFO] running `Command { std: "docker" "start" "-a" "8f130daf262033c7da4f68038fae2c23f8a07364561397a55022644b7331d76d", kill_on_drop: false }` [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling cortex-m v0.7.2 [INFO] [stderr] Compiling vcell v0.1.3 [INFO] [stderr] Compiling void v1.0.2 [INFO] [stderr] Compiling stable_deref_trait v1.2.0 [INFO] [stderr] Compiling cortex-m v0.6.7 [INFO] [stderr] Compiling bitfield v0.13.2 [INFO] [stderr] Compiling jlink_rtt v0.2.0 [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stderr] Compiling nb v0.1.3 [INFO] [stderr] Compiling generic-array v0.13.3 [INFO] [stderr] Compiling generic-array v0.12.4 [INFO] [stderr] Compiling volatile-register v0.2.0 [INFO] [stderr] Compiling embedded-hal v0.2.5 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling as-slice v0.1.5 [INFO] [stderr] Compiling bare-metal v0.2.5 [INFO] [stderr] Compiling aligned v0.3.4 [INFO] [stderr] Compiling panic_rtt v0.3.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.82s [INFO] running `Command { std: "docker" "inspect" "8f130daf262033c7da4f68038fae2c23f8a07364561397a55022644b7331d76d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8f130daf262033c7da4f68038fae2c23f8a07364561397a55022644b7331d76d", kill_on_drop: false }` [INFO] [stdout] 8f130daf262033c7da4f68038fae2c23f8a07364561397a55022644b7331d76d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--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] 130f133fd4347499be29daec5a686787f5f1aa152b7e97e375c7b90f37b1fafb [INFO] running `Command { std: "docker" "start" "-a" "130f133fd4347499be29daec5a686787f5f1aa152b7e97e375c7b90f37b1fafb", 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/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-21256c14e4504640.so, /opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-21256c14e4504640.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` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `Command { std: "docker" "inspect" "130f133fd4347499be29daec5a686787f5f1aa152b7e97e375c7b90f37b1fafb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "130f133fd4347499be29daec5a686787f5f1aa152b7e97e375c7b90f37b1fafb", kill_on_drop: false }` [INFO] [stdout] 130f133fd4347499be29daec5a686787f5f1aa152b7e97e375c7b90f37b1fafb