[INFO] cloning repository https://github.com/dpc/mioecho
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dpc/mioecho" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpc%2Fmioecho", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpc%2Fmioecho'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee164facade7662057a29d64ffd45a7f74e7ab3b
[INFO] documenting dpc/mioecho against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpc%2Fmioecho" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dpc/mioecho on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dpc/mioecho
[INFO] finished tweaking git repo https://github.com/dpc/mioecho
[INFO] tweaked toml for git repo https://github.com/dpc/mioecho written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/dpc/mioecho already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "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-4/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[INFO] the lockfile is outdated, regenerating it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" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 14d2777f4c5ed40bdac8378794e4110bfa43a612d28c6cdf2ec9222972f45813
[INFO] running `Command { std: "docker" "start" "-a" "14d2777f4c5ed40bdac8378794e4110bfa43a612d28c6cdf2ec9222972f45813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14d2777f4c5ed40bdac8378794e4110bfa43a612d28c6cdf2ec9222972f45813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14d2777f4c5ed40bdac8378794e4110bfa43a612d28c6cdf2ec9222972f45813", kill_on_drop: false }`
[INFO] [stdout] 14d2777f4c5ed40bdac8378794e4110bfa43a612d28c6cdf2ec9222972f45813
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a67843e92a8e1074232249cefaabdea80435d8cca6a88eac16e096e0201906e2
[INFO] running `Command { std: "docker" "start" "-a" "a67843e92a8e1074232249cefaabdea80435d8cca6a88eac16e096e0201906e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking mio v0.7.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]  Documenting mioecho v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `mio::tcp`
[INFO] [stdout]  --> src/main.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | use mio::tcp::*;
[INFO] [stdout]   |          ^^^ could not find `tcp` in `mio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `bytes::RingBuf`, `bytes::MutBuf`
[INFO] [stdout]  --> src/main.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use bytes::{RingBuf, Buf, MutBuf};
[INFO] [stdout]   |             ^^^^^^^       ^^^^^^ no `MutBuf` in the root
[INFO] [stdout]   |             |
[INFO] [stdout]   |             no `RingBuf` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `mio::util`
[INFO] [stdout]  --> src/main.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | use mio::util::Slab;
[INFO] [stdout]   |          ^^^^ could not find `util` in `mio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TcpStream` in this scope
[INFO] [stdout]   --> src/main.rs:29:11
[INFO] [stdout]    |
[INFO] [stdout] 29 |     sock: TcpStream,
[INFO] [stdout]    |           ^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 5  | use std::net::TcpStream;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `EventSet` in this scope
[INFO] [stdout]   --> src/main.rs:33:15
[INFO] [stdout]    |
[INFO] [stdout] 33 |     interest: EventSet,
[INFO] [stdout]    |               ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TcpStream` in this scope
[INFO] [stdout]   --> src/main.rs:37:18
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn new(sock: TcpStream) -> Connection {
[INFO] [stdout]    |                  ^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 5  | use std::net::TcpStream;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `EventLoop` in this scope
[INFO] [stdout]   --> src/main.rs:52:36
[INFO] [stdout]    |
[INFO] [stdout] 52 |                   event_loop: &mut EventLoop<Server>,
[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:76:34
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 event_loop: &mut EventLoop<Server>,
[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:107:34
[INFO] [stdout]     |
[INFO] [stdout] 107 |                 event_loop: &mut EventLoop<Server>,
[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:136:29
[INFO] [stdout]     |
[INFO] [stdout] 136 |            event_loop: &mut EventLoop<Server>,
[INFO] [stdout]     |                             ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TcpListener` in this scope
[INFO] [stdout]    --> src/main.rs:162:11
[INFO] [stdout]     |
[INFO] [stdout] 162 |     sock: TcpListener,
[INFO] [stdout]     |           ^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 5   | use std::net::TcpListener;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `EventLoop` in this scope
[INFO] [stdout]    --> src/main.rs:168:54
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn new(addr : SocketAddr) -> io::Result<(Server, EventLoop<Server>)> {
[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:183:43
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn accept(&mut self, event_loop: &mut EventLoop<Server>) -> io::Result<()> {
[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:219:50
[INFO] [stdout]     |
[INFO] [stdout] 219 |     fn conn_readable(&mut self, event_loop: &mut EventLoop<Server>, tok: Token) -> io::Result<()> {
[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:229:50
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn conn_writable(&mut self, event_loop: &mut EventLoop<Server>, tok: Token) -> io::Result<()> {
[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:239:45
[INFO] [stdout]     |
[INFO] [stdout] 239 |     fn conn_hup(&mut self, event_loop: &mut EventLoop<Server>, tok: Token) -> io::Result<()> {
[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:254:6
[INFO] [stdout]     |
[INFO] [stdout] 254 | impl Handler for Server {
[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:258:42
[INFO] [stdout]     |
[INFO] [stdout] 258 |     fn ready(&mut self, event_loop: &mut EventLoop<Server>, token: Token, events: EventSet) {
[INFO] [stdout]     |                                          ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `EventSet` in this scope
[INFO] [stdout]    --> src/main.rs:258:83
[INFO] [stdout]     |
[INFO] [stdout] 258 |     fn ready(&mut self, event_loop: &mut EventLoop<Server>, token: Token, events: EventSet) {
[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 20 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0412, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `mioecho`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name mioecho 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 bytes=/opt/rustwide/target/debug/deps/libbytes-c5714e68d7e46dbf.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-02cc0f2fc3777d15.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-95a9d57e67df36ac.rmeta --extern mio=/opt/rustwide/target/debug/deps/libmio-7b8a2c5bd01a2bbc.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-a80f11789cd3d123.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "a67843e92a8e1074232249cefaabdea80435d8cca6a88eac16e096e0201906e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a67843e92a8e1074232249cefaabdea80435d8cca6a88eac16e096e0201906e2", kill_on_drop: false }`
[INFO] [stdout] a67843e92a8e1074232249cefaabdea80435d8cca6a88eac16e096e0201906e2