[INFO] fetching crate lobby 0.0.1...
[INFO] testing lobby-0.0.1 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate lobby 0.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate lobby 0.0.1 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 437dfbb212bf0551fa87784887b6175d499c83ba7d5c5c5bf82a0e7371c2c211
[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" "437dfbb212bf0551fa87784887b6175d499c83ba7d5c5c5bf82a0e7371c2c211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "437dfbb212bf0551fa87784887b6175d499c83ba7d5c5c5bf82a0e7371c2c211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "437dfbb212bf0551fa87784887b6175d499c83ba7d5c5c5bf82a0e7371c2c211", kill_on_drop: false }`
[INFO] [stdout] 437dfbb212bf0551fa87784887b6175d499c83ba7d5c5c5bf82a0e7371c2c211
[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" "RUSTFLAGS=--cap-lints=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2e34c905c5fcf8650a8cbb94f5b6f581ee2c0c5d190fd8941edee1772a499f7
[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" "b2e34c905c5fcf8650a8cbb94f5b6f581ee2c0c5d190fd8941edee1772a499f7", 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] 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 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0107, E0432.
[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 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b2e34c905c5fcf8650a8cbb94f5b6f581ee2c0c5d190fd8941edee1772a499f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2e34c905c5fcf8650a8cbb94f5b6f581ee2c0c5d190fd8941edee1772a499f7", kill_on_drop: false }`
[INFO] [stdout] b2e34c905c5fcf8650a8cbb94f5b6f581ee2c0c5d190fd8941edee1772a499f7