[INFO] cloning repository https://github.com/lauriannala/rust_worm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lauriannala/rust_worm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flauriannala%2Frust_worm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flauriannala%2Frust_worm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8dfef5974a1139b6c399dbda37cfd5503d0ed348
[INFO] checking lauriannala/rust_worm against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flauriannala%2Frust_worm" "/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/lauriannala/rust_worm 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/lauriannala/rust_worm
[INFO] finished tweaking git repo https://github.com/lauriannala/rust_worm
[INFO] tweaked toml for git repo https://github.com/lauriannala/rust_worm written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lauriannala/rust_worm 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 sdl2 v0.34.5
[INFO] [stderr]   Downloaded sdl2-sys v0.34.5
[INFO] [stderr]   Downloaded libc v0.2.99
[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] 723d75d52c725d2ca873087783563b892331eb4b86c6d53ffd2afd653e38eb5b
[INFO] running `Command { std: "docker" "start" "-a" "723d75d52c725d2ca873087783563b892331eb4b86c6d53ffd2afd653e38eb5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "723d75d52c725d2ca873087783563b892331eb4b86c6d53ffd2afd653e38eb5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "723d75d52c725d2ca873087783563b892331eb4b86c6d53ffd2afd653e38eb5b", kill_on_drop: false }`
[INFO] [stdout] 723d75d52c725d2ca873087783563b892331eb4b86c6d53ffd2afd653e38eb5b
[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] 1c7eee0792e5faf1c8509bef523504236cdca923d2e05ee73d970d3aa3c5e3d7
[INFO] running `Command { std: "docker" "start" "-a" "1c7eee0792e5faf1c8509bef523504236cdca923d2e05ee73d970d3aa3c5e3d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]    Compiling sdl2-sys v0.34.5
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rust_worm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `x`, `y`, and `length` are never read
[INFO] [stdout]   --> src/worm.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Worm {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 11 |     pub x: u32,
[INFO] [stdout]    |         ^
[INFO] [stdout] 12 |     pub y: u32,
[INFO] [stdout]    |         ^
[INFO] [stdout] 13 |     pub length: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Worm` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `length` are never read
[INFO] [stdout]   --> src/worm.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Worm {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 11 |     pub x: u32,
[INFO] [stdout]    |         ^
[INFO] [stdout] 12 |     pub y: u32,
[INFO] [stdout]    |         ^
[INFO] [stdout] 13 |     pub length: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Worm` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 2.93s
[INFO] running `Command { std: "docker" "inspect" "1c7eee0792e5faf1c8509bef523504236cdca923d2e05ee73d970d3aa3c5e3d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c7eee0792e5faf1c8509bef523504236cdca923d2e05ee73d970d3aa3c5e3d7", kill_on_drop: false }`
[INFO] [stdout] 1c7eee0792e5faf1c8509bef523504236cdca923d2e05ee73d970d3aa3c5e3d7
[INFO] checking lauriannala/rust_worm against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flauriannala%2Frust_worm" "/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/lauriannala/rust_worm 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/lauriannala/rust_worm
[INFO] finished tweaking git repo https://github.com/lauriannala/rust_worm
[INFO] tweaked toml for git repo https://github.com/lauriannala/rust_worm written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/lauriannala/rust_worm 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] 38f59865737ecb675542c98ddf3bd94c5c6f143fb6694257eef64de9de59c9fc
[INFO] running `Command { std: "docker" "start" "-a" "38f59865737ecb675542c98ddf3bd94c5c6f143fb6694257eef64de9de59c9fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38f59865737ecb675542c98ddf3bd94c5c6f143fb6694257eef64de9de59c9fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38f59865737ecb675542c98ddf3bd94c5c6f143fb6694257eef64de9de59c9fc", kill_on_drop: false }`
[INFO] [stdout] 38f59865737ecb675542c98ddf3bd94c5c6f143fb6694257eef64de9de59c9fc
[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] 7b011f744be7a1f017a1990610e70eae6eafb536af3a9dd23397643fd8392c91
[INFO] running `Command { std: "docker" "start" "-a" "7b011f744be7a1f017a1990610e70eae6eafb536af3a9dd23397643fd8392c91", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]    Compiling sdl2-sys v0.34.5
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rust_worm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `x`, `y`, and `length` are never read
[INFO] [stdout]   --> src/worm.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Worm {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 11 |     pub x: u32,
[INFO] [stdout]    |         ^
[INFO] [stdout] 12 |     pub y: u32,
[INFO] [stdout]    |         ^
[INFO] [stdout] 13 |     pub length: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Worm` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `length` are never read
[INFO] [stdout]   --> src/worm.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Worm {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 11 |     pub x: u32,
[INFO] [stdout]    |         ^
[INFO] [stdout] 12 |     pub y: u32,
[INFO] [stdout]    |         ^
[INFO] [stdout] 13 |     pub length: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Worm` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 4.44s
[INFO] running `Command { std: "docker" "inspect" "7b011f744be7a1f017a1990610e70eae6eafb536af3a9dd23397643fd8392c91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b011f744be7a1f017a1990610e70eae6eafb536af3a9dd23397643fd8392c91", kill_on_drop: false }`
[INFO] [stdout] 7b011f744be7a1f017a1990610e70eae6eafb536af3a9dd23397643fd8392c91