[INFO] cloning repository https://github.com/rep-nop/bismuth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rep-nop/bismuth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frep-nop%2Fbismuth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frep-nop%2Fbismuth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2aecd8cbf7bd5fbf2a84fbf9fb76edf215dd3780
[INFO] documenting rep-nop/bismuth against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frep-nop%2Fbismuth" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rep-nop/bismuth on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/.cargo/config
[INFO] started tweaking git repo https://github.com/rep-nop/bismuth
[INFO] finished tweaking git repo https://github.com/rep-nop/bismuth
[INFO] tweaked toml for git repo https://github.com/rep-nop/bismuth written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/rep-nop/bismuth already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vcell v0.1.0
[INFO] [stderr]   Downloaded volatile-register v0.2.0
[INFO] [stderr]   Downloaded cortex-m v0.5.8
[INFO] [stderr]   Downloaded panic-itm v0.4.0
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.1.4
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.6
[INFO] [stderr]   Downloaded aligned v0.2.0
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5116893256d25a14f4cc81f791ea636c6d30a3a3bad943880fd84d646538c37f
[INFO] running `Command { std: "docker" "start" "-a" "5116893256d25a14f4cc81f791ea636c6d30a3a3bad943880fd84d646538c37f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5116893256d25a14f4cc81f791ea636c6d30a3a3bad943880fd84d646538c37f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5116893256d25a14f4cc81f791ea636c6d30a3a3bad943880fd84d646538c37f", kill_on_drop: false }`
[INFO] [stdout] 5116893256d25a14f4cc81f791ea636c6d30a3a3bad943880fd84d646538c37f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "RUSTDOCFLAGS=--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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 752941d62cbf087c1c3b57009745b4de9d444b43c694e8b851ab779fab77decc
[INFO] running `Command { std: "docker" "start" "-a" "752941d62cbf087c1c3b57009745b4de9d444b43c694e8b851ab779fab77decc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling cortex-m v0.5.8
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]     Checking aligned v0.2.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.6
[INFO] [stderr]    Compiling bismuth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]     Checking panic-itm v0.4.0
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.4
[INFO] [stderr]  Documenting bismuth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: duplicate lang item in crate `panic_halt`: `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_itm` (which `bismuth` depends on)
[INFO] [stdout]   = note: first definition in `panic_itm` loaded from /opt/rustwide/target/debug/deps/libpanic_itm-6c03dcaf080a90d9.rmeta
[INFO] [stdout]   = note: second definition in `panic_halt` loaded from /opt/rustwide/target/debug/deps/libpanic_halt-c270b2dbfb333297.rmeta
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `bismuth`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name bismuth src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-4b2061818a3bada0.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-70a7552422cabbda.rmeta --extern cortex_m_semihosting=/opt/rustwide/target/debug/deps/libcortex_m_semihosting-ab94dff7664b9bbf.rmeta --extern panic_halt=/opt/rustwide/target/debug/deps/libpanic_halt-c270b2dbfb333297.rmeta --extern panic_itm=/opt/rustwide/target/debug/deps/libpanic_itm-6c03dcaf080a90d9.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "752941d62cbf087c1c3b57009745b4de9d444b43c694e8b851ab779fab77decc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "752941d62cbf087c1c3b57009745b4de9d444b43c694e8b851ab779fab77decc", kill_on_drop: false }`
[INFO] [stdout] 752941d62cbf087c1c3b57009745b4de9d444b43c694e8b851ab779fab77decc
