[INFO] cloning repository https://github.com/jswrenn/midinet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jswrenn/midinet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjswrenn%2Fmidinet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjswrenn%2Fmidinet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f29b1b826ab8070fc0116200fbe293792a0cb1c2
[INFO] documenting jswrenn/midinet against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjswrenn%2Fmidinet" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jswrenn/midinet on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jswrenn/midinet
[INFO] finished tweaking git repo https://github.com/jswrenn/midinet
[INFO] tweaked toml for git repo https://github.com/jswrenn/midinet written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jswrenn/midinet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded alsa v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14ea4229d3fa4728d4166f5504d63f65e2ad5764c03b159f5054a4f744055a9a
[INFO] running `Command { std: "docker" "start" "-a" "14ea4229d3fa4728d4166f5504d63f65e2ad5764c03b159f5054a4f744055a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14ea4229d3fa4728d4166f5504d63f65e2ad5764c03b159f5054a4f744055a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14ea4229d3fa4728d4166f5504d63f65e2ad5764c03b159f5054a4f744055a9a", kill_on_drop: false }`
[INFO] [stdout] 14ea4229d3fa4728d4166f5504d63f65e2ad5764c03b159f5054a4f744055a9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf4ac30c704092af00fec129ba70753101bec58aff5651b4f4688f1dd931a9e1
[INFO] running `Command { std: "docker" "start" "-a" "bf4ac30c704092af00fec129ba70753101bec58aff5651b4f4688f1dd931a9e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]    Compiling alsa-sys v0.1.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]    Compiling quote v0.5.1
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]     Checking alsa v0.2.0
[INFO] [stderr]    Compiling structopt-derive v0.2.7
[INFO] [stderr]     Checking structopt v0.2.7
[INFO] [stderr]  Documenting midinet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]   --> src/bin/client.rs:38:38
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn run(options : &Options) -> Result<!, Box<Error>> {
[INFO] [stdout]    |                                      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]   --> src/bin/server.rs:20:37
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn run(options : Options) -> Result<!, Box<Error>> {
[INFO] [stdout]    |                                     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `midinet`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name client src/bin/client.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=f6daabb9962e0aca -L dependency=/opt/rustwide/target/debug/deps --extern alsa=/opt/rustwide/target/debug/deps/libalsa-27f4f42bc62845b9.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-524f94cadbee20ae.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not document `midinet`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name server src/bin/server.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=426183df20517614 -L dependency=/opt/rustwide/target/debug/deps --extern alsa=/opt/rustwide/target/debug/deps/libalsa-27f4f42bc62845b9.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-524f94cadbee20ae.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "bf4ac30c704092af00fec129ba70753101bec58aff5651b4f4688f1dd931a9e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf4ac30c704092af00fec129ba70753101bec58aff5651b4f4688f1dd931a9e1", kill_on_drop: false }`
[INFO] [stdout] bf4ac30c704092af00fec129ba70753101bec58aff5651b4f4688f1dd931a9e1
