[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 master#f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b for pr-148329
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanelegan%2Fsamplerust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/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-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Danelegan/samplerust on toolchain f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "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" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7609772afc918bdc1c5a18e2f38bbee108bf9f99ca643c863b8f476163b21659
[INFO] running `Command { std: "docker" "start" "-a" "7609772afc918bdc1c5a18e2f38bbee108bf9f99ca643c863b8f476163b21659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7609772afc918bdc1c5a18e2f38bbee108bf9f99ca643c863b8f476163b21659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7609772afc918bdc1c5a18e2f38bbee108bf9f99ca643c863b8f476163b21659", kill_on_drop: false }`
[INFO] [stdout] 7609772afc918bdc1c5a18e2f38bbee108bf9f99ca643c863b8f476163b21659
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4f0d4f3f98b935e0d1f0760295641973017cf6d8f6e55a656149eee01262c62
[INFO] running `Command { std: "docker" "start" "-a" "f4f0d4f3f98b935e0d1f0760295641973017cf6d8f6e55a656149eee01262c62", 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/f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b/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[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/f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b/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] 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] [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") due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "f4f0d4f3f98b935e0d1f0760295641973017cf6d8f6e55a656149eee01262c62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4f0d4f3f98b935e0d1f0760295641973017cf6d8f6e55a656149eee01262c62", kill_on_drop: false }`
[INFO] [stdout] f4f0d4f3f98b935e0d1f0760295641973017cf6d8f6e55a656149eee01262c62
