[INFO] updating cached repository https://github.com/lukeasrodgers/rust-mio-toy-tcp-server
[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] a4630a7dc2e757de85dc2a835f46dc281dace818
[INFO] documenting lukeasrodgers/rust-mio-toy-tcp-server against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukeasrodgers%2Frust-mio-toy-tcp-server" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lukeasrodgers/rust-mio-toy-tcp-server on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lukeasrodgers/rust-mio-toy-tcp-server
[INFO] finished tweaking git repo https://github.com/lukeasrodgers/rust-mio-toy-tcp-server
[INFO] tweaked toml for git repo https://github.com/lukeasrodgers/rust-mio-toy-tcp-server written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/lukeasrodgers/rust-mio-toy-tcp-server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/mio`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5dca792d3d93d4f577b110c6ae42e6df519505a6ab20fb2bb84e3839020afc0d
[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" "5dca792d3d93d4f577b110c6ae42e6df519505a6ab20fb2bb84e3839020afc0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5dca792d3d93d4f577b110c6ae42e6df519505a6ab20fb2bb84e3839020afc0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dca792d3d93d4f577b110c6ae42e6df519505a6ab20fb2bb84e3839020afc0d", kill_on_drop: false }`
[INFO] [stdout] 5dca792d3d93d4f577b110c6ae42e6df519505a6ab20fb2bb84e3839020afc0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b58b81989dd064917115a43f37104db3f2810f1fdad2780e39e49ce2524b2bed
[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" "b58b81989dd064917115a43f37104db3f2810f1fdad2780e39e49ce2524b2bed", kill_on_drop: false }`
[INFO] [stderr]  Documenting mio-echo v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `net` in `mio`
[INFO] [stdout]   --> src/main.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | use mio::net::tcp::{TcpSocket, TcpAcceptor};
[INFO] [stdout]    |          ^^^ could not find `net` in `mio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `mio::net`
[INFO] [stdout]   --> src/main.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | use mio::net::{SockAddr};
[INFO] [stdout]    |          ^^^ could not find `net` in `mio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `mio::buf`
[INFO] [stdout]   --> src/main.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | use mio::buf::{ByteBuf};
[INFO] [stdout]    |          ^^^ could not find `buf` in `mio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `EventLoop` in this scope
[INFO] [stdout]   --> src/main.rs:32:47
[INFO] [stdout]    |
[INFO] [stdout] 32 |         fn accept(&mut self, event_loop: &mut EventLoop<(), ()>) {
[INFO] [stdout]    |                                               ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Handler` in this scope
[INFO] [stdout]   --> src/main.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |     impl Handler<(), ()> for TcpHandler {
[INFO] [stdout]    |          ^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `EventLoop` in this scope
[INFO] [stdout]   --> src/main.rs:60:49
[INFO] [stdout]    |
[INFO] [stdout] 60 |         fn readable(&mut self, event_loop: &mut EventLoop<(), ()>, token: Token, _: ReadHint) {
[INFO] [stdout]    |                                                 ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ReadHint` in this scope
[INFO] [stdout]   --> src/main.rs:60:85
[INFO] [stdout]    |
[INFO] [stdout] 60 |         fn readable(&mut self, event_loop: &mut EventLoop<(), ()>, token: Token, _: ReadHint) {
[INFO] [stdout]    |                                                                                     ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0412, E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `mio-echo`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name mio_echo 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 mio=/opt/rustwide/target/debug/deps/libmio-600852c647879096.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "b58b81989dd064917115a43f37104db3f2810f1fdad2780e39e49ce2524b2bed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b58b81989dd064917115a43f37104db3f2810f1fdad2780e39e49ce2524b2bed", kill_on_drop: false }`
[INFO] [stdout] b58b81989dd064917115a43f37104db3f2810f1fdad2780e39e49ce2524b2bed