[INFO] cloning repository https://github.com/Rhelvetican/img_combinator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Rhelvetican/img_combinator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRhelvetican%2Fimg_combinator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRhelvetican%2Fimg_combinator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 69aa19991afd797cebffce07d055fb51c65aaea0
[INFO] checking Rhelvetican/img_combinator against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRhelvetican%2Fimg_combinator" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Rhelvetican/img_combinator 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 git repo https://github.com/Rhelvetican/img_combinator
[INFO] finished tweaking git repo https://github.com/Rhelvetican/img_combinator
[INFO] tweaked toml for git repo https://github.com/Rhelvetican/img_combinator written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Rhelvetican/img_combinator 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rayon v1.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 07bed30f27a19ec60f1f7a0527bcdf89df01c7519e673b5619c1a5a739a87483
[INFO] running `Command { std: "docker" "start" "-a" "07bed30f27a19ec60f1f7a0527bcdf89df01c7519e673b5619c1a5a739a87483", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07bed30f27a19ec60f1f7a0527bcdf89df01c7519e673b5619c1a5a739a87483", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07bed30f27a19ec60f1f7a0527bcdf89df01c7519e673b5619c1a5a739a87483", kill_on_drop: false }`
[INFO] [stdout] 07bed30f27a19ec60f1f7a0527bcdf89df01c7519e673b5619c1a5a739a87483
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 40f08ec9d6ae2a8dc370fb0fad0956dad5f4fcfa01e3133876f75334653f60ce
[INFO] running `Command { std: "docker" "start" "-a" "40f08ec9d6ae2a8dc370fb0fad0956dad5f4fcfa01e3133876f75334653f60ce", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking exr v1.72.0
[INFO] [stderr]     Checking rayon v1.9.0
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking av1-grain v0.2.3
[INFO] [stderr]     Checking maybe-rayon v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling profiling-procmacros v1.0.15
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]     Checking profiling v1.0.15
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking image-webp v0.1.1
[INFO] [stderr]     Checking rav1e v0.7.1
[INFO] [stderr]     Checking ravif v0.11.5
[INFO] [stderr]     Checking image v0.25.0
[INFO] [stderr]     Checking img_combinator v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     vec::Vec,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     vec::Vec,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.16s
[INFO] running `Command { std: "docker" "inspect" "40f08ec9d6ae2a8dc370fb0fad0956dad5f4fcfa01e3133876f75334653f60ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40f08ec9d6ae2a8dc370fb0fad0956dad5f4fcfa01e3133876f75334653f60ce", kill_on_drop: false }`
[INFO] [stdout] 40f08ec9d6ae2a8dc370fb0fad0956dad5f4fcfa01e3133876f75334653f60ce
[INFO] checking Rhelvetican/img_combinator against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRhelvetican%2Fimg_combinator" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Rhelvetican/img_combinator 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 git repo https://github.com/Rhelvetican/img_combinator
[INFO] finished tweaking git repo https://github.com/Rhelvetican/img_combinator
[INFO] tweaked toml for git repo https://github.com/Rhelvetican/img_combinator written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Rhelvetican/img_combinator 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 4cc15298d76330d00114f8f4dfc2c232292b52688b7dfe7f0fa54a39b6329b15
[INFO] running `Command { std: "docker" "start" "-a" "4cc15298d76330d00114f8f4dfc2c232292b52688b7dfe7f0fa54a39b6329b15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cc15298d76330d00114f8f4dfc2c232292b52688b7dfe7f0fa54a39b6329b15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cc15298d76330d00114f8f4dfc2c232292b52688b7dfe7f0fa54a39b6329b15", kill_on_drop: false }`
[INFO] [stdout] 4cc15298d76330d00114f8f4dfc2c232292b52688b7dfe7f0fa54a39b6329b15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 6c2ca7fdacf95dbf265e52097d27a4444cb1617108b71ada18fdfe831ea1ad8f
[INFO] running `Command { std: "docker" "start" "-a" "6c2ca7fdacf95dbf265e52097d27a4444cb1617108b71ada18fdfe831ea1ad8f", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking exr v1.72.0
[INFO] [stderr]     Checking rayon v1.9.0
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking av1-grain v0.2.3
[INFO] [stderr]     Checking maybe-rayon v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling profiling-procmacros v1.0.15
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]     Checking profiling v1.0.15
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking rav1e v0.7.1
[INFO] [stderr]     Checking image-webp v0.1.1
[INFO] [stderr]     Checking ravif v0.11.5
[INFO] [stderr]     Checking image v0.25.0
[INFO] [stderr]     Checking img_combinator v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     vec::Vec,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]  --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     vec::Vec,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]  --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.62s
[INFO] running `Command { std: "docker" "inspect" "6c2ca7fdacf95dbf265e52097d27a4444cb1617108b71ada18fdfe831ea1ad8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c2ca7fdacf95dbf265e52097d27a4444cb1617108b71ada18fdfe831ea1ad8f", kill_on_drop: false }`
[INFO] [stdout] 6c2ca7fdacf95dbf265e52097d27a4444cb1617108b71ada18fdfe831ea1ad8f