[INFO] fetching crate scrappy-rt 0.0.1...
[INFO] checking scrappy-rt-0.0.1 against master#191df20fcad9331d3a948aa8e8556775ec3fe69d for pr-133502-3
[INFO] extracting crate scrappy-rt 0.0.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate scrappy-rt 0.0.1 on toolchain 191df20fcad9331d3a948aa8e8556775ec3fe69d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+191df20fcad9331d3a948aa8e8556775ec3fe69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scrappy-rt 0.0.1
[INFO] finished tweaking crates.io crate scrappy-rt 0.0.1
[INFO] tweaked toml for crates.io crate scrappy-rt 0.0.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+191df20fcad9331d3a948aa8e8556775ec3fe69d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 59 packages to latest compatible versions
[INFO] [stderr]       Adding tokio v0.2.25 (available: v1.44.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+191df20fcad9331d3a948aa8e8556775ec3fe69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lock_api v0.3.4
[INFO] [stderr]   Downloaded cloudabi v0.0.3
[INFO] [stderr]   Downloaded threadpool v1.8.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.57
[INFO] [stderr]   Downloaded copyless v0.1.5
[INFO] [stderr]   Downloaded parking_lot v0.10.2
[INFO] [stderr]   Downloaded parking_lot_core v0.7.3
[INFO] [stderr]   Downloaded scrappy-macros v0.0.1
[INFO] [stderr]   Downloaded scrappy-threadpool v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+191df20fcad9331d3a948aa8e8556775ec3fe69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f6faef909f1bb5830f8c082ba89a7d29f52b7ce9011ef4005e4c90652a46ee6
[INFO] running `Command { std: "docker" "start" "-a" "3f6faef909f1bb5830f8c082ba89a7d29f52b7ce9011ef4005e4c90652a46ee6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f6faef909f1bb5830f8c082ba89a7d29f52b7ce9011ef4005e4c90652a46ee6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f6faef909f1bb5830f8c082ba89a7d29f52b7ce9011ef4005e4c90652a46ee6", kill_on_drop: false }`
[INFO] [stdout] 3f6faef909f1bb5830f8c082ba89a7d29f52b7ce9011ef4005e4c90652a46ee6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+191df20fcad9331d3a948aa8e8556775ec3fe69d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a25c2124531e5ccb3f4dea23d25cee49f598a8dd700045786aa58c0721c2d040
[INFO] running `Command { std: "docker" "start" "-a" "a25c2124531e5ccb3f4dea23d25cee49f598a8dd700045786aa58c0721c2d040", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking smallvec v1.15.0
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]    Compiling scrappy-macros v0.0.1
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking copyless v0.1.5
[INFO] [stderr]     Checking parking_lot_core v0.7.3
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling derive_more v0.99.19
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking scrappy-threadpool v0.0.1
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking scrappy-rt v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: field `system` is never read
[INFO] [stdout]    --> src/builder.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 111 | pub(crate) struct AsyncSystemRunner {
[INFO] [stdout]     |                   ----------------- field in this struct
[INFO] [stdout] 112 |     stop: Receiver<i32>,
[INFO] [stdout] 113 |     system: System,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AsyncSystemRunner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:2:27
[INFO] [stdout]     |
[INFO] [stdout] 2   | #![deny(rust_2018_idioms, warnings)]
[INFO] [stdout]     |                           ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `system` is never read
[INFO] [stdout]    --> src/builder.rs:153:5
[INFO] [stdout]     |
[INFO] [stdout] 150 | pub struct SystemRunner {
[INFO] [stdout]     |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 153 |     system: System,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SystemRunner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `system` is never read
[INFO] [stdout]    --> src/builder.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 111 | pub(crate) struct AsyncSystemRunner {
[INFO] [stdout]     |                   ----------------- field in this struct
[INFO] [stdout] 112 |     stop: Receiver<i32>,
[INFO] [stdout] 113 |     system: System,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AsyncSystemRunner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:2:27
[INFO] [stdout]     |
[INFO] [stdout] 2   | #![deny(rust_2018_idioms, warnings)]
[INFO] [stdout]     |                           ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `system` is never read
[INFO] [stdout]    --> src/builder.rs:153:5
[INFO] [stdout]     |
[INFO] [stdout] 150 | pub struct SystemRunner {
[INFO] [stdout]     |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 153 |     system: System,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SystemRunner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `scrappy-rt` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `scrappy-rt` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a25c2124531e5ccb3f4dea23d25cee49f598a8dd700045786aa58c0721c2d040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a25c2124531e5ccb3f4dea23d25cee49f598a8dd700045786aa58c0721c2d040", kill_on_drop: false }`
[INFO] [stdout] a25c2124531e5ccb3f4dea23d25cee49f598a8dd700045786aa58c0721c2d040