[INFO] fetching crate digital-ink-library 1.4.0...
[INFO] checking digital-ink-library-1.4.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate digital-ink-library 1.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate digital-ink-library 1.4.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate digital-ink-library 1.4.0
[INFO] finished tweaking crates.io crate digital-ink-library 1.4.0
[INFO] tweaked toml for crates.io crate digital-ink-library 1.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 27 packages
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a20c086b270afec746a462fa7721e59f841bd974bbcc73fbe101590a8f7f6779
[INFO] running `Command { std: "docker" "start" "-a" "a20c086b270afec746a462fa7721e59f841bd974bbcc73fbe101590a8f7f6779", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a20c086b270afec746a462fa7721e59f841bd974bbcc73fbe101590a8f7f6779", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a20c086b270afec746a462fa7721e59f841bd974bbcc73fbe101590a8f7f6779", kill_on_drop: false }`
[INFO] [stdout] a20c086b270afec746a462fa7721e59f841bd974bbcc73fbe101590a8f7f6779
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcb11df83d752e40ca70cf745332756e0506a44146fd837f70fcfcb569569114
[INFO] running `Command { std: "docker" "start" "-a" "dcb11df83d752e40ca70cf745332756e0506a44146fd837f70fcfcb569569114", kill_on_drop: false }`
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking digital-ink-library v1.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/stroke.rs:184:61
[INFO] [stdout]     |
[INFO] [stdout] 184 |         enum Field { Type, Meta, X, Y, Timestamp, Pressure };
[INFO] [stdout]     |                                                             ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]  --> src/sketch.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde;
[INFO] [stdout]   |     ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/sketch.rs:202:43
[INFO] [stdout]     |
[INFO] [stdout] 202 |         enum Field { Type, Meta, Strokes };
[INFO] [stdout]     |                                           ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/stroke.rs:184:61
[INFO] [stdout]     |
[INFO] [stdout] 184 |         enum Field { Type, Meta, X, Y, Timestamp, Pressure };
[INFO] [stdout]     |                                                             ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]  --> src/sketch.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde;
[INFO] [stdout]   |     ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/sketch.rs:202:43
[INFO] [stdout]     |
[INFO] [stdout] 202 |         enum Field { Type, Meta, Strokes };
[INFO] [stdout]     |                                           ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "dcb11df83d752e40ca70cf745332756e0506a44146fd837f70fcfcb569569114", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcb11df83d752e40ca70cf745332756e0506a44146fd837f70fcfcb569569114", kill_on_drop: false }`
[INFO] [stdout] dcb11df83d752e40ca70cf745332756e0506a44146fd837f70fcfcb569569114