[INFO] fetching crate lobby 0.0.1...
[INFO] testing lobby-0.0.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate lobby 0.0.1 into /workspace/builds/worker-75/source
[INFO] validating manifest of crates.io crate lobby 0.0.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lobby 0.0.1
[INFO] finished tweaking crates.io crate lobby 0.0.1
[INFO] tweaked toml for crates.io crate lobby 0.0.1 written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 524100c8f987b5aaf6d9a527aa746c25c0a15e21569237acc48172e3b673d8b5
[INFO] running `Command { std: "docker" "start" "-a" "524100c8f987b5aaf6d9a527aa746c25c0a15e21569237acc48172e3b673d8b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "524100c8f987b5aaf6d9a527aa746c25c0a15e21569237acc48172e3b673d8b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "524100c8f987b5aaf6d9a527aa746c25c0a15e21569237acc48172e3b673d8b5", kill_on_drop: false }`
[INFO] [stdout] 524100c8f987b5aaf6d9a527aa746c25c0a15e21569237acc48172e3b673d8b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] daa352d9dd92a64977137f6287f097e9a0fcba05b7213076661da086b4cfbd22
[INFO] running `Command { std: "docker" "start" "-a" "daa352d9dd92a64977137f6287f097e9a0fcba05b7213076661da086b4cfbd22", kill_on_drop: false }`
[INFO] [stderr]    Compiling lobby v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::collections::VecMap`
[INFO] [stdout]   --> src/lib.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 | use std::collections::{VecDeque, VecMap};
[INFO] [stdout]    |                                  ^^^^^^ no `VecMap` in `collections`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | #![feature(collections, io, net)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:68:24
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let listener = try!(TcpListener::bind(&addr));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: missing generics for struct `JoinHandle`
[INFO] [stdout]     --> src/lib.rs:53:13
[INFO] [stdout]      |
[INFO] [stdout] 53   |     thread: JoinHandle,
[INFO] [stdout]      |             ^^^^^^^^^^ expected 1 generic argument
[INFO] [stdout]      |
[INFO] [stdout] note: struct defined here, with 1 generic parameter: `T`
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]      |
[INFO] [stdout] 53   |     thread: JoinHandle<T>,
[INFO] [stdout]      |             ~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0107, E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0107`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lobby` due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "daa352d9dd92a64977137f6287f097e9a0fcba05b7213076661da086b4cfbd22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daa352d9dd92a64977137f6287f097e9a0fcba05b7213076661da086b4cfbd22", kill_on_drop: false }`
[INFO] [stdout] daa352d9dd92a64977137f6287f097e9a0fcba05b7213076661da086b4cfbd22