[INFO] updating cached repository https://github.com/oxidecomputer/qemu-systick-bug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e6286b7740450211c38c684cb16642741f25e4c
[INFO] documenting oxidecomputer/qemu-systick-bug against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foxidecomputer%2Fqemu-systick-bug" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oxidecomputer/qemu-systick-bug on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/.cargo/config
[INFO] started tweaking git repo https://github.com/oxidecomputer/qemu-systick-bug
[INFO] finished tweaking git repo https://github.com/oxidecomputer/qemu-systick-bug
[INFO] tweaked toml for git repo https://github.com/oxidecomputer/qemu-systick-bug written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/oxidecomputer/qemu-systick-bug already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db2262939505e8147d8a247a42802810dd3728e74bb62ad881eccb865debc9c8
[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" "db2262939505e8147d8a247a42802810dd3728e74bb62ad881eccb865debc9c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db2262939505e8147d8a247a42802810dd3728e74bb62ad881eccb865debc9c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db2262939505e8147d8a247a42802810dd3728e74bb62ad881eccb865debc9c8", kill_on_drop: false }`
[INFO] [stdout] db2262939505e8147d8a247a42802810dd3728e74bb62ad881eccb865debc9c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18ea2ddbf8a07a5a260156277ee50ed4783f0861d02cd6de617bea1ffc340a9f
[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" "18ea2ddbf8a07a5a260156277ee50ed4783f0861d02cd6de617bea1ffc340a9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.5
[INFO] [stderr]    Compiling cortex-m-rt v0.6.12
[INFO] [stderr]    Compiling qemu-systick-bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking as-slice v0.1.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking aligned v0.3.2
[INFO] [stderr]     Checking cortex-m v0.6.2
[INFO] [stderr]     Checking panic-semihosting v0.5.3
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]  Documenting qemu-systick-bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: duplicate lang item in crate `panic_halt` (which `qemu_systick_bug` depends on): `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_semihosting` (which `qemu_systick_bug` depends on)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `qemu-systick-bug`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name qemu_systick_bug 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-1e9fc52ec6c8573c.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-2137544cc0b88848.rmeta --extern cortex_m_semihosting=/opt/rustwide/target/debug/deps/libcortex_m_semihosting-62ce775905532f04.rmeta --extern panic_halt=/opt/rustwide/target/debug/deps/libpanic_halt-5cb144f9267ebca2.rmeta --extern panic_semihosting=/opt/rustwide/target/debug/deps/libpanic_semihosting-4eb79a1bc6e3c9be.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "18ea2ddbf8a07a5a260156277ee50ed4783f0861d02cd6de617bea1ffc340a9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18ea2ddbf8a07a5a260156277ee50ed4783f0861d02cd6de617bea1ffc340a9f", kill_on_drop: false }`
[INFO] [stdout] 18ea2ddbf8a07a5a260156277ee50ed4783f0861d02cd6de617bea1ffc340a9f