[INFO] updating cached repository https://github.com/Jean-Dum/Bares
[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] 950cce611d3071d1f96d8885dafde8680efc559e
[INFO] documenting Jean-Dum/Bares against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJean-Dum%2FBares" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jean-Dum/Bares on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jean-Dum/Bares
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/Jean-Dum/Bares
[INFO] tweaked toml for git repo https://github.com/Jean-Dum/Bares written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Jean-Dum/Bares 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 556d9c7b83b08f919ff8538d2df979ee0004bdcdffbc7074002f084a5289fde7
[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" "556d9c7b83b08f919ff8538d2df979ee0004bdcdffbc7074002f084a5289fde7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "556d9c7b83b08f919ff8538d2df979ee0004bdcdffbc7074002f084a5289fde7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "556d9c7b83b08f919ff8538d2df979ee0004bdcdffbc7074002f084a5289fde7", kill_on_drop: false }`
[INFO] [stdout] 556d9c7b83b08f919ff8538d2df979ee0004bdcdffbc7074002f084a5289fde7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a07087c151efb790bf96f373fdec1372cf6230206d54659fbe9e8190e038eb4a
[INFO] running `Command { std: "docker" "start" "-a" "a07087c151efb790bf96f373fdec1372cf6230206d54659fbe9e8190e038eb4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling cortex-m v0.6.2
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking nb v0.1.2
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking as-slice v0.1.3
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking aligned v0.3.2
[INFO] [stderr]     Checking heapless v0.5.3
[INFO] [stderr]     Checking panic-itm v0.4.1
[INFO] [stderr]     Checking panic-semihosting v0.5.3
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]    Compiling ufmt-macros v0.1.1
[INFO] [stderr]     Checking ufmt v0.1.0
[INFO] [stderr]     Checking cortex-m-rt v0.6.12
[INFO] [stderr]  Documenting app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: duplicate lang item in crate `panic_itm` (which `app` depends on): `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_halt` (which `app` depends on)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: duplicate lang item in crate `panic_semihosting` (which `app` depends on): `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_itm` (which `app` depends on)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `app`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name app 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 aligned=/opt/rustwide/target/debug/deps/libaligned-5069f94384dc2b10.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-bb85df01a8ca901f.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-02b6e6fc98cbfee8.rmeta --extern heapless=/opt/rustwide/target/debug/deps/libheapless-f419a1bf5ab5a8ec.rmeta --extern nb=/opt/rustwide/target/debug/deps/libnb-6a90b4024c217707.rmeta --extern panic_halt=/opt/rustwide/target/debug/deps/libpanic_halt-5cb144f9267ebca2.rmeta --extern panic_itm=/opt/rustwide/target/debug/deps/libpanic_itm-83b6294434d53243.rmeta --extern panic_semihosting=/opt/rustwide/target/debug/deps/libpanic_semihosting-4d227d2624d849b9.rmeta --extern ufmt=/opt/rustwide/target/debug/deps/libufmt-fbf68b485320a8e5.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "a07087c151efb790bf96f373fdec1372cf6230206d54659fbe9e8190e038eb4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a07087c151efb790bf96f373fdec1372cf6230206d54659fbe9e8190e038eb4a", kill_on_drop: false }`
[INFO] [stdout] a07087c151efb790bf96f373fdec1372cf6230206d54659fbe9e8190e038eb4a