[INFO] cloning repository https://github.com/vi/netmeasure2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vi/netmeasure2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvi%2Fnetmeasure2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvi%2Fnetmeasure2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72f2cf5dc36bf194558c1bf16398e7ac95dd037b
[INFO] documenting vi/netmeasure2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvi%2Fnetmeasure2" "/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/vi/netmeasure2 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vi/netmeasure2
[INFO] finished tweaking git repo https://github.com/vi/netmeasure2
[INFO] tweaked toml for git repo https://github.com/vi/netmeasure2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/vi/netmeasure2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_cbor v0.9.0
[INFO] [stderr]   Downloaded enum-iterator-derive v0.6.0
[INFO] [stderr]   Downloaded half v1.6.0
[INFO] [stderr]   Downloaded derivative v2.1.1
[INFO] [stderr]   Downloaded counted-array v0.1.2
[INFO] [stderr]   Downloaded structopt v0.3.17
[INFO] [stderr]   Downloaded structopt-derive v0.4.10
[INFO] [stderr]   Downloaded enum-iterator v0.6.0
[INFO] [stderr]   Downloaded strum_macros v0.19.2
[INFO] [stderr]   Downloaded strum v0.19.2
[INFO] [stderr]   Downloaded enum-unitary v0.4.2
[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" "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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1900fe86f8c705ee305d90bed0274300d56e289445785e91c32146b9dd04a4c
[INFO] running `Command { std: "docker" "start" "-a" "a1900fe86f8c705ee305d90bed0274300d56e289445785e91c32146b9dd04a4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1900fe86f8c705ee305d90bed0274300d56e289445785e91c32146b9dd04a4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1900fe86f8c705ee305d90bed0274300d56e289445785e91c32146b9dd04a4c", kill_on_drop: false }`
[INFO] [stdout] a1900fe86f8c705ee305d90bed0274300d56e289445785e91c32146b9dd04a4c
[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" "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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be44d5e651381a0cd30f4f0a4749c476da7ae2bda23473b96758fe43b59e87c3
[INFO] running `Command { std: "docker" "start" "-a" "be44d5e651381a0cd30f4f0a4749c476da7ae2bda23473b96758fe43b59e87c3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking half v1.6.0
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking strum v0.19.2
[INFO] [stderr]     Checking spin_sleep v1.0.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking counted-array v0.1.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking serde_cbor v0.9.0
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]    Compiling structopt-derive v0.4.10
[INFO] [stderr]    Compiling strum_macros v0.19.2
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]     Checking enum-iterator v0.6.0
[INFO] [stderr]     Checking enum-unitary v0.4.2
[INFO] [stderr]     Checking structopt v0.3.17
[INFO] [stderr]  Documenting netmeasure2 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_blocks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/battery/visualise.rs:324:6
[INFO] [stdout]     |
[INFO] [stdout] 324 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `netmeasure2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name netmeasure2 src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e575263c6e0de202 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-cac8b837a4a146f1.rmeta --extern bincode=/opt/rustwide/target/debug/deps/libbincode-dee282d2529622ca.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-1b5bd1b820a35456.rmeta --extern counted_array=/opt/rustwide/target/debug/deps/libcounted_array-7ddd9745651ae5ed.rmeta --extern derivative=/opt/rustwide/target/debug/deps/libderivative-4c450afed77e5eb3.so --extern enum_unitary=/opt/rustwide/target/debug/deps/libenum_unitary-81cf7582b67a70fe.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-d85b7049e07481c8.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-ba576d6a31ccf3df.rmeta --extern rand_xorshift=/opt/rustwide/target/debug/deps/librand_xorshift-7417f050527f88a7.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-f0293f38f141561f.rmeta --extern serde_cbor=/opt/rustwide/target/debug/deps/libserde_cbor-70bf6f13a7127b27.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-cc1f3a4e30964e4a.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-861de0edc317b395.rmeta --extern spin_sleep=/opt/rustwide/target/debug/deps/libspin_sleep-f28be0b9eca91b19.rmeta --extern static_assertions=/opt/rustwide/target/debug/deps/libstatic_assertions-df62a6794b74038e.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-1c23905772194872.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-0173b5713a5e407f.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-f16dcac0950eb7da.so --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "be44d5e651381a0cd30f4f0a4749c476da7ae2bda23473b96758fe43b59e87c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be44d5e651381a0cd30f4f0a4749c476da7ae2bda23473b96758fe43b59e87c3", kill_on_drop: false }`
[INFO] [stdout] be44d5e651381a0cd30f4f0a4749c476da7ae2bda23473b96758fe43b59e87c3