[INFO] cloning repository https://github.com/Danelegan/samplerust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Danelegan/samplerust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanelegan%2Fsamplerust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanelegan%2Fsamplerust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7495ec2db2aebe6cce75e7bd5247e0442e90b414
[INFO] checking Danelegan/samplerust against try#f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 for pr-147834
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanelegan%2Fsamplerust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Danelegan/samplerust
[INFO] finished tweaking git repo https://github.com/Danelegan/samplerust
[INFO] tweaked toml for git repo https://github.com/Danelegan/samplerust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Danelegan/samplerust on toolchain f77b5bc6c7c84df104f86b0dd01d9490e3923fa8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Danelegan/samplerust 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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f2446c854b874a0c6833d2d8872f24377778d4969960196b16ba619d4801727
[INFO] running `Command { std: "docker" "start" "-a" "8f2446c854b874a0c6833d2d8872f24377778d4969960196b16ba619d4801727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f2446c854b874a0c6833d2d8872f24377778d4969960196b16ba619d4801727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f2446c854b874a0c6833d2d8872f24377778d4969960196b16ba619d4801727", kill_on_drop: false }`
[INFO] [stdout] 8f2446c854b874a0c6833d2d8872f24377778d4969960196b16ba619d4801727
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 163d24b7f392122905cebb2f8f13f454053517dc7454c39e2089ba1ff1dde033
[INFO] running `Command { std: "docker" "start" "-a" "163d24b7f392122905cebb2f8f13f454053517dc7454c39e2089ba1ff1dde033", kill_on_drop: false }`
[INFO] [stderr]     Checking samplerust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `Sender` in this scope
[INFO] [stdout]   --> src/main.rs:16:43
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let (tx, rx) = sync_channel::<(usize, Sender<()>)>(chairs);
[INFO] [stdout]    |                                           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   --> /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/core/src/marker.rs:94:1
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named trait `Send` defined here
[INFO] [stdout] help: a trait with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 16 -     let (tx, rx) = sync_channel::<(usize, Sender<()>)>(chairs);
[INFO] [stdout] 16 +     let (tx, rx) = sync_channel::<(usize, Send<()>)>(chairs);
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::sync::mpmc::Sender;
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::sync::mpsc::Sender;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Receiver`
[INFO] [stdout]  --> src/main.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::mpsc::{sync_channel, Receiver, TrySendError};
[INFO] [stdout]   |                                     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/main.rs:25:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |                     let _ = done_tx.send(());
[INFO] [stdout]    |                             ^^^^^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Sender` in this scope
[INFO] [stdout]   --> src/main.rs:16:43
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let (tx, rx) = sync_channel::<(usize, Sender<()>)>(chairs);
[INFO] [stdout]    |                                           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   --> /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/core/src/marker.rs:94:1
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named trait `Send` defined here
[INFO] [stdout] help: a trait with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 16 -     let (tx, rx) = sync_channel::<(usize, Sender<()>)>(chairs);
[INFO] [stdout] 16 +     let (tx, rx) = sync_channel::<(usize, Send<()>)>(chairs);
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::sync::mpmc::Sender;
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::sync::mpsc::Sender;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Receiver`
[INFO] [stdout]  --> src/main.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::mpsc::{sync_channel, Receiver, TrySendError};
[INFO] [stdout]   |                                     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0412.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `samplerust` (bin "samplerust") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/main.rs:25:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |                     let _ = done_tx.send(());
[INFO] [stdout]    |                             ^^^^^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0412.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `samplerust` (bin "samplerust" test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "163d24b7f392122905cebb2f8f13f454053517dc7454c39e2089ba1ff1dde033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "163d24b7f392122905cebb2f8f13f454053517dc7454c39e2089ba1ff1dde033", kill_on_drop: false }`
[INFO] [stdout] 163d24b7f392122905cebb2f8f13f454053517dc7454c39e2089ba1ff1dde033
