[INFO] updating cached repository https://github.com/frogshead/blue-pill-ds1820-temp-sensor
[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] 6ad2f49dbf7538842d7db1f9e7192d0d8a3b0c0a
[INFO] documenting frogshead/blue-pill-ds1820-temp-sensor against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrogshead%2Fblue-pill-ds1820-temp-sensor" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/frogshead/blue-pill-ds1820-temp-sensor 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-5/source/.cargo/config
[INFO] started tweaking git repo https://github.com/frogshead/blue-pill-ds1820-temp-sensor
[INFO] finished tweaking git repo https://github.com/frogshead/blue-pill-ds1820-temp-sensor
[INFO] tweaked toml for git repo https://github.com/frogshead/blue-pill-ds1820-temp-sensor written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/frogshead/blue-pill-ds1820-temp-sensor 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 4ccf03602e123c7db4193aa06c06a9226a7f39c1da2d1500c6ecbe2538269e37
[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" "4ccf03602e123c7db4193aa06c06a9226a7f39c1da2d1500c6ecbe2538269e37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ccf03602e123c7db4193aa06c06a9226a7f39c1da2d1500c6ecbe2538269e37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ccf03602e123c7db4193aa06c06a9226a7f39c1da2d1500c6ecbe2538269e37", kill_on_drop: false }`
[INFO] [stdout] 4ccf03602e123c7db4193aa06c06a9226a7f39c1da2d1500c6ecbe2538269e37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 245fe2d5f9db43a24ef73fc2ec643de78e4688f559e137fa0a40dcc021438320
[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" "245fe2d5f9db43a24ef73fc2ec643de78e4688f559e137fa0a40dcc021438320", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cortex-m v0.5.8
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking aligned v0.2.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking nb v0.1.1
[INFO] [stderr]    Compiling cortex-m-rt v0.6.7
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.2
[INFO] [stderr]    Compiling stm32f1 v0.6.0
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking m v0.1.1
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]     Checking embedded-hal v0.2.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking hash32 v0.1.0
[INFO] [stderr]     Checking onewire v0.3.10
[INFO] [stderr]     Checking enc28j60 v0.2.1
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking generic-array v0.11.1
[INFO] [stderr]     Checking panic-itm v0.4.0
[INFO] [stderr]     Checking panic-semihosting v0.5.1
[INFO] [stderr]     Checking mfrc522 v0.2.0
[INFO] [stderr]     Checking heapless v0.4.2
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.88
[INFO] [stderr]     Checking stm32f1xx-hal v0.2.0
[INFO] [stderr]  Documenting ds1820 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: duplicate lang item in crate `panic_itm` (which `ds1820` depends on): `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_semihosting` (which `ds1820` depends on)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `ds1820`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ds1820 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-556f6a2d323f219a.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-69519e18eacc1e77.rmeta --extern cortex_m_semihosting=/opt/rustwide/target/debug/deps/libcortex_m_semihosting-a2f55676edad89e7.rmeta --extern enc28j60=/opt/rustwide/target/debug/deps/libenc28j60-42c6d080b4ca442a.rmeta --extern heapless=/opt/rustwide/target/debug/deps/libheapless-01ca73e3eea719d8.rmeta --extern m=/opt/rustwide/target/debug/deps/libm-2fdfe54679ae6f4a.rmeta --extern mfrc522=/opt/rustwide/target/debug/deps/libmfrc522-313884deb7961f39.rmeta --extern nb=/opt/rustwide/target/debug/deps/libnb-aa959ecd06acba90.rmeta --extern onewire=/opt/rustwide/target/debug/deps/libonewire-97183f769413a138.rmeta --extern panic_itm=/opt/rustwide/target/debug/deps/libpanic_itm-9d01b6a28d7a165e.rmeta --extern panic_semihosting=/opt/rustwide/target/debug/deps/libpanic_semihosting-dd43212f980a8d46.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-2c71453bcaa05873.so --extern stm32f1xx_hal=/opt/rustwide/target/debug/deps/libstm32f1xx_hal-22503998b5317d43.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "245fe2d5f9db43a24ef73fc2ec643de78e4688f559e137fa0a40dcc021438320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "245fe2d5f9db43a24ef73fc2ec643de78e4688f559e137fa0a40dcc021438320", kill_on_drop: false }`
[INFO] [stdout] 245fe2d5f9db43a24ef73fc2ec643de78e4688f559e137fa0a40dcc021438320