[INFO] fetching crate favicon 0.1.0-draft-1...
[INFO] checking favicon-0.1.0-draft-1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate favicon 0.1.0-draft-1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate favicon 0.1.0-draft-1 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 favicon 0.1.0-draft-1
[INFO] finished tweaking crates.io crate favicon 0.1.0-draft-1
[INFO] tweaked toml for crates.io crate favicon 0.1.0-draft-1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 38 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding image v0.24.9 (latest: v0.25.1)
[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] 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] 5a3444bcf2ad34849cb16830535a6a2da1dea58de5e3101193ff0c4333e867a6
[INFO] running `Command { std: "docker" "start" "-a" "5a3444bcf2ad34849cb16830535a6a2da1dea58de5e3101193ff0c4333e867a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a3444bcf2ad34849cb16830535a6a2da1dea58de5e3101193ff0c4333e867a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a3444bcf2ad34849cb16830535a6a2da1dea58de5e3101193ff0c4333e867a6", kill_on_drop: false }`
[INFO] [stdout] 5a3444bcf2ad34849cb16830535a6a2da1dea58de5e3101193ff0c4333e867a6
[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] ed62d618ae9cc13d3f40ad511b8e7da002a0154727fff5cac900a219a3fd6ce7
[INFO] running `Command { std: "docker" "start" "-a" "ed62d618ae9cc13d3f40ad511b8e7da002a0154727fff5cac900a219a3fd6ce7", kill_on_drop: false }`
[INFO] [stderr]     Checking image v0.24.9
[INFO] [stderr]     Checking favicon v0.1.0-draft-1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `format` is never read
[INFO] [stdout]   --> src/lib.rs:44:16
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Preset<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 43 |     pub(crate) name: &'a str,
[INFO] [stdout] 44 |     pub(crate) format: Format,
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `out_dir` and `presets` are never read
[INFO] [stdout]   --> src/lib.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct Favicon<'a, P: AsRef<Path>> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 61 |     pub(crate) image: DynamicImage,
[INFO] [stdout] 62 |     pub(crate) out_dir: P,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 63 |     pub(crate) presets: Vec<Preset<'a>>,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `format` is never read
[INFO] [stdout]   --> src/lib.rs:44:16
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Preset<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 43 |     pub(crate) name: &'a str,
[INFO] [stdout] 44 |     pub(crate) format: Format,
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `out_dir` and `presets` are never read
[INFO] [stdout]   --> src/lib.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct Favicon<'a, P: AsRef<Path>> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 61 |     pub(crate) image: DynamicImage,
[INFO] [stdout] 62 |     pub(crate) out_dir: P,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 63 |     pub(crate) presets: Vec<Preset<'a>>,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.30s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ed62d618ae9cc13d3f40ad511b8e7da002a0154727fff5cac900a219a3fd6ce7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed62d618ae9cc13d3f40ad511b8e7da002a0154727fff5cac900a219a3fd6ce7", kill_on_drop: false }`
[INFO] [stdout] ed62d618ae9cc13d3f40ad511b8e7da002a0154727fff5cac900a219a3fd6ce7
[INFO] checking favicon-0.1.0-draft-1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate favicon 0.1.0-draft-1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate favicon 0.1.0-draft-1 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate favicon 0.1.0-draft-1
[INFO] finished tweaking crates.io crate favicon 0.1.0-draft-1
[INFO] tweaked toml for crates.io crate favicon 0.1.0-draft-1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 38 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding image v0.24.9 (latest: v0.25.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b6ac774e97d9d43b3c9113658643a2ba61c0e3f89a5f5a2f05b5bf62bcc3468
[INFO] running `Command { std: "docker" "start" "-a" "8b6ac774e97d9d43b3c9113658643a2ba61c0e3f89a5f5a2f05b5bf62bcc3468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b6ac774e97d9d43b3c9113658643a2ba61c0e3f89a5f5a2f05b5bf62bcc3468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b6ac774e97d9d43b3c9113658643a2ba61c0e3f89a5f5a2f05b5bf62bcc3468", kill_on_drop: false }`
[INFO] [stdout] 8b6ac774e97d9d43b3c9113658643a2ba61c0e3f89a5f5a2f05b5bf62bcc3468
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42fb980345f3cfc22e21a5fd9a93d31ca91a0e8635c53cc0d4443585ef7721b8
[INFO] running `Command { std: "docker" "start" "-a" "42fb980345f3cfc22e21a5fd9a93d31ca91a0e8635c53cc0d4443585ef7721b8", kill_on_drop: false }`
[INFO] [stderr]     Checking image v0.24.9
[INFO] [stderr]     Checking favicon v0.1.0-draft-1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `format` is never read
[INFO] [stdout]   --> src/lib.rs:44:16
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Preset<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 43 |     pub(crate) name: &'a str,
[INFO] [stdout] 44 |     pub(crate) format: Format,
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `out_dir` and `presets` are never read
[INFO] [stdout]   --> src/lib.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct Favicon<'a, P: AsRef<Path>> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 61 |     pub(crate) image: DynamicImage,
[INFO] [stdout] 62 |     pub(crate) out_dir: P,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 63 |     pub(crate) presets: Vec<Preset<'a>>,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `format` is never read
[INFO] [stdout]   --> src/lib.rs:44:16
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Preset<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 43 |     pub(crate) name: &'a str,
[INFO] [stdout] 44 |     pub(crate) format: Format,
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `out_dir` and `presets` are never read
[INFO] [stdout]   --> src/lib.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct Favicon<'a, P: AsRef<Path>> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 61 |     pub(crate) image: DynamicImage,
[INFO] [stdout] 62 |     pub(crate) out_dir: P,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 63 |     pub(crate) presets: Vec<Preset<'a>>,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.24s
[INFO] running `Command { std: "docker" "inspect" "42fb980345f3cfc22e21a5fd9a93d31ca91a0e8635c53cc0d4443585ef7721b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42fb980345f3cfc22e21a5fd9a93d31ca91a0e8635c53cc0d4443585ef7721b8", kill_on_drop: false }`
[INFO] [stdout] 42fb980345f3cfc22e21a5fd9a93d31ca91a0e8635c53cc0d4443585ef7721b8