[INFO] fetching crate tapciify 2.1.0...
[INFO] checking tapciify-2.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate tapciify 2.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate tapciify 2.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tapciify 2.1.0
[INFO] finished tweaking crates.io crate tapciify 2.1.0
[INFO] tweaked toml for crates.io crate tapciify 2.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate tapciify 2.1.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stderr]   Downloaded exr v1.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 594424a37bf10db517d45e0191733446e30325ae93837cf92291b06efac04425
[INFO] running `Command { std: "docker" "start" "-a" "594424a37bf10db517d45e0191733446e30325ae93837cf92291b06efac04425", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "594424a37bf10db517d45e0191733446e30325ae93837cf92291b06efac04425", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "594424a37bf10db517d45e0191733446e30325ae93837cf92291b06efac04425", kill_on_drop: false }`
[INFO] [stdout] 594424a37bf10db517d45e0191733446e30325ae93837cf92291b06efac04425
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20005a59eecc213918fb4dc43e8062e0c1bad99a9a053dfbe20e21e627658e84
[INFO] running `Command { std: "docker" "start" "-a" "20005a59eecc213918fb4dc43e8062e0c1bad99a9a053dfbe20e21e627658e84", kill_on_drop: false }`
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling memoffset v0.9.0
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[INFO] [stderr]    Compiling rayon-core v1.11.0
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[INFO] [stderr]     Checking tapciify v2.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `a` is never read
[INFO] [stdout]   --> src/ascii.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct AsciiCharacter {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub a: u8,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AsciiCharacter` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `colored` are never read
[INFO] [stdout]    --> src/ascii.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 144 | pub struct AsciiArt {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 145 |     pub text: String,
[INFO] [stdout] 146 |     pub width: u32,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 147 |     pub height: u32,
[INFO] [stdout] 148 |     pub colored: bool,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AsciiArt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `a` is never read
[INFO] [stdout]   --> src/ascii.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct AsciiCharacter {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub a: u8,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AsciiCharacter` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `colored` are never read
[INFO] [stdout]    --> src/ascii.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 144 | pub struct AsciiArt {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 145 |     pub text: String,
[INFO] [stdout] 146 |     pub width: u32,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 147 |     pub height: u32,
[INFO] [stdout] 148 |     pub colored: bool,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AsciiArt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.74s
[INFO] running `Command { std: "docker" "inspect" "20005a59eecc213918fb4dc43e8062e0c1bad99a9a053dfbe20e21e627658e84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20005a59eecc213918fb4dc43e8062e0c1bad99a9a053dfbe20e21e627658e84", kill_on_drop: false }`
[INFO] [stdout] 20005a59eecc213918fb4dc43e8062e0c1bad99a9a053dfbe20e21e627658e84