[INFO] cloning repository https://github.com/sirkibsirkib/slick
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sirkibsirkib/slick" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsirkibsirkib%2Fslick", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsirkibsirkib%2Fslick'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e2530d035c7e67df86873150aa9c3883da65d39
[INFO] checking sirkibsirkib/slick against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsirkibsirkib%2Fslick" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sirkibsirkib/slick on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sirkibsirkib/slick
[INFO] finished tweaking git repo https://github.com/sirkibsirkib/slick
[INFO] tweaked toml for git repo https://github.com/sirkibsirkib/slick written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sirkibsirkib/slick 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 950ba622099e455e2a074b44c5f103646519c9cf443838cc5b5eba6a372e4700
[INFO] running `Command { std: "docker" "start" "-a" "950ba622099e455e2a074b44c5f103646519c9cf443838cc5b5eba6a372e4700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "950ba622099e455e2a074b44c5f103646519c9cf443838cc5b5eba6a372e4700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "950ba622099e455e2a074b44c5f103646519c9cf443838cc5b5eba6a372e4700", kill_on_drop: false }`
[INFO] [stdout] 950ba622099e455e2a074b44c5f103646519c9cf443838cc5b5eba6a372e4700
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a87a7c65e87bdcd631cb26c932b1bc9b9da370a35cbc323cecef8d2cdcb8cf8d
[INFO] running `Command { std: "docker" "start" "-a" "a87a7c65e87bdcd631cb26c932b1bc9b9da370a35cbc323cecef8d2cdcb8cf8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking slick v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `to_atom` is never used
[INFO] [stdout]   --> src/ast.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub trait AtomLike {
[INFO] [stdout]    |           -------- method in this trait
[INFO] [stdout] 9  |     fn as_atom(&self) -> &Atom;
[INFO] [stdout] 10 |     fn to_atom(self) -> Atom;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `rightward_lexicographic` is never used
[INFO] [stdout]   --> src/ast.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Lexicographic {
[INFO] [stdout]    |           ------------- method in this trait
[INFO] [stdout] 14 |     fn rightward_flat_constants(&self, other: &Self) -> Ordering;
[INFO] [stdout] 15 |     fn rightward_lexicographic(&self, other: &Self) -> Ordering;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/infer.rs:53:34
[INFO] [stdout]    |
[INFO] [stdout] 53 |     InferredAtomExceededMaxDepth(GroundAtom),
[INFO] [stdout]    |     ---------------------------- ^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `InfereceError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 53 |     InferredAtomExceededMaxDepth(()),
[INFO] [stdout]    |                                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `retain` is never used
[INFO] [stdout]   --> src/util.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<T: Hash + Eq + Clone> VecSet<T> {
[INFO] [stdout]    | ------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn retain(mut self, mut func: impl FnMut(&T) -> bool) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_atom` is never used
[INFO] [stdout]   --> src/ast.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub trait AtomLike {
[INFO] [stdout]    |           -------- method in this trait
[INFO] [stdout] 9  |     fn as_atom(&self) -> &Atom;
[INFO] [stdout] 10 |     fn to_atom(self) -> Atom;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `rightward_lexicographic` is never used
[INFO] [stdout]   --> src/ast.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Lexicographic {
[INFO] [stdout]    |           ------------- method in this trait
[INFO] [stdout] 14 |     fn rightward_flat_constants(&self, other: &Self) -> Ordering;
[INFO] [stdout] 15 |     fn rightward_lexicographic(&self, other: &Self) -> Ordering;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/infer.rs:53:34
[INFO] [stdout]    |
[INFO] [stdout] 53 |     InferredAtomExceededMaxDepth(GroundAtom),
[INFO] [stdout]    |     ---------------------------- ^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `InfereceError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 53 |     InferredAtomExceededMaxDepth(()),
[INFO] [stdout]    |                                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `retain` is never used
[INFO] [stdout]   --> src/util.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<T: Hash + Eq + Clone> VecSet<T> {
[INFO] [stdout]    | ------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn retain(mut self, mut func: impl FnMut(&T) -> bool) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `Command { std: "docker" "inspect" "a87a7c65e87bdcd631cb26c932b1bc9b9da370a35cbc323cecef8d2cdcb8cf8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a87a7c65e87bdcd631cb26c932b1bc9b9da370a35cbc323cecef8d2cdcb8cf8d", kill_on_drop: false }`
[INFO] [stdout] a87a7c65e87bdcd631cb26c932b1bc9b9da370a35cbc323cecef8d2cdcb8cf8d