[INFO] cloning repository https://github.com/jmesmon/freqm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmesmon/freqm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmesmon%2Ffreqm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmesmon%2Ffreqm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4f92a87299be7f93940c7b3b42c67b74f0a041dc
[INFO] documenting jmesmon/freqm against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmesmon%2Ffreqm" "/workspace/builds/worker-24/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-24/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmesmon/freqm on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jmesmon/freqm
[INFO] finished tweaking git repo https://github.com/jmesmon/freqm
[INFO] tweaked toml for git repo https://github.com/jmesmon/freqm written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate git repo https://github.com/jmesmon/freqm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b9f185b9d4940e754ae79ac9b2ba025486679df82d3055d0fa620c02e10097c
[INFO] running `Command { std: "docker" "start" "-a" "3b9f185b9d4940e754ae79ac9b2ba025486679df82d3055d0fa620c02e10097c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b9f185b9d4940e754ae79ac9b2ba025486679df82d3055d0fa620c02e10097c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b9f185b9d4940e754ae79ac9b2ba025486679df82d3055d0fa620c02e10097c", kill_on_drop: false }`
[INFO] [stdout] 3b9f185b9d4940e754ae79ac9b2ba025486679df82d3055d0fa620c02e10097c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 142b4ef1768c510d00ef052f9346f5fad08954f2af49e6918a36f2b08c6a13c4
[INFO] running `Command { std: "docker" "start" "-a" "142b4ef1768c510d00ef052f9346f5fad08954f2af49e6918a36f2b08c6a13c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling pkg-config v0.3.20
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ord_subset v3.1.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking atom v0.3.6
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling decimal v2.1.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]     Checking nix v0.16.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking serial-unix v0.4.0
[INFO] [stderr]     Checking serial v0.4.0
[INFO] [stderr]     Checking hibitset v0.6.3
[INFO] [stderr]    Compiling snafu-derive v0.6.10
[INFO] [stderr]     Checking serialport v4.0.1
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]     Checking snafu v0.6.10
[INFO] [stderr]     Checking structopt v0.3.23
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]  Documenting freqm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `serialport::prelude`
[INFO] [stdout]  --> src/anytone_ht.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serialport::prelude::*;
[INFO] [stdout]   |                 ^^^^^^^ could not find `prelude` in `serialport`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `freqm`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name freqm src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3abc9ed27b0ee7c0 -L dependency=/opt/rustwide/target/debug/deps --extern csv=/opt/rustwide/target/debug/deps/libcsv-ecd1b3ee21451a44.rmeta --extern decimal=/opt/rustwide/target/debug/deps/libdecimal-6b777f67c5469154.rmeta --extern hibitset=/opt/rustwide/target/debug/deps/libhibitset-b19fa896e354b3cb.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-3891a9bca32e02ce.rmeta --extern serial=/opt/rustwide/target/debug/deps/libserial-4309cb22e3b3004b.rmeta --extern serialport=/opt/rustwide/target/debug/deps/libserialport-50ff3d095670cbc2.rmeta --extern snafu=/opt/rustwide/target/debug/deps/libsnafu-cbadc07f95f11c66.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-bdecf2cd710c7065.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "142b4ef1768c510d00ef052f9346f5fad08954f2af49e6918a36f2b08c6a13c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "142b4ef1768c510d00ef052f9346f5fad08954f2af49e6918a36f2b08c6a13c4", kill_on_drop: false }`
[INFO] [stdout] 142b4ef1768c510d00ef052f9346f5fad08954f2af49e6918a36f2b08c6a13c4