[INFO] cloning repository https://github.com/gopik/btree [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gopik/btree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgopik%2Fbtree", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgopik%2Fbtree'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 59ee7607631d96d93220afe01bccac86c9bc0af9 [INFO] checking gopik/btree against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgopik%2Fbtree" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/gopik/btree 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/gopik/btree [INFO] finished tweaking git repo https://github.com/gopik/btree [INFO] tweaked toml for git repo https://github.com/gopik/btree written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/gopik/btree 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] 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] 3e01832d0bc1dbea1ccf18dba7dfbc3a5e3a2512767405d20c0d69e40259ca9e [INFO] running `Command { std: "docker" "start" "-a" "3e01832d0bc1dbea1ccf18dba7dfbc3a5e3a2512767405d20c0d69e40259ca9e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3e01832d0bc1dbea1ccf18dba7dfbc3a5e3a2512767405d20c0d69e40259ca9e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3e01832d0bc1dbea1ccf18dba7dfbc3a5e3a2512767405d20c0d69e40259ca9e", kill_on_drop: false }` [INFO] [stdout] 3e01832d0bc1dbea1ccf18dba7dfbc3a5e3a2512767405d20c0d69e40259ca9e [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] 7775cdddfaf6e037899ed44d363c3bc76963664e2b392fd91f2be3b5506a99b1 [INFO] running `Command { std: "docker" "start" "-a" "7775cdddfaf6e037899ed44d363c3bc76963664e2b392fd91f2be3b5506a99b1", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.29 [INFO] [stderr] Compiling syn v1.0.76 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling serde_derive v1.0.130 [INFO] [stderr] Compiling libc v0.2.101 [INFO] [stderr] Compiling serde v1.0.130 [INFO] [stderr] Compiling serde_json v1.0.67 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking itoa v0.4.8 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stderr] Checking env_logger v0.9.0 [INFO] [stderr] Compiling test-env-log v0.2.7 [INFO] [stderr] Checking btree v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variant `NodeUnderflow` is never constructed [INFO] [stdout] --> src/main.rs:82:5 [INFO] [stdout] | [INFO] [stdout] 79 | enum BtreeError { [INFO] [stdout] | ---------- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 82 | NodeUnderflow(V), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `BtreeError` 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: enum `KV` is never used [INFO] [stdout] --> src/main.rs:89:6 [INFO] [stdout] | [INFO] [stdout] 89 | enum KV { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `remove_key`, `num_keys`, `remove_max`, and `remove_min` are never used [INFO] [stdout] --> src/main.rs:113:8 [INFO] [stdout] | [INFO] [stdout] 100 | impl Node { [INFO] [stdout] | ---------------------------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 113 | fn remove_key(&mut self, key: &K) -> Result> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 127 | fn num_keys(&self) -> usize { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 134 | fn remove_max(&mut self) -> KV { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 147 | fn remove_min(&mut self) -> KV { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `remove_min`, `remove_max`, `remove_key`, and `num_keys` are never used [INFO] [stdout] --> src/main.rs:171:8 [INFO] [stdout] | [INFO] [stdout] 170 | impl LeafNode { [INFO] [stdout] | -------------------------------------- methods in this implementation [INFO] [stdout] 171 | fn remove_min(&mut self) -> (K, V) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 174 | fn remove_max(&mut self) -> (K, V) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 221 | fn remove_key(&mut self, key: &K) -> Result> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 236 | fn num_keys(&self) -> usize { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple methods are never used [INFO] [stdout] --> src/main.rs:267:8 [INFO] [stdout] | [INFO] [stdout] 266 | impl BranchNode { [INFO] [stdout] | ---------------------------------------- methods in this implementation [INFO] [stdout] 267 | fn remove_min(&mut self) -> (K, Node) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 270 | fn remove_max(&mut self) -> (K, Node) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 273 | fn num_keys(&self) -> usize { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 343 | fn leaf_borrow_from_left(&mut self, left: usize, key: usize, right: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 359 | fn leaf_merge(&mut self, left: usize, key: usize, right: usize) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 375 | fn leaf_borrow_from_right(&mut self, left: usize, key: usize, right: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 386 | fn handle_leaf_undeflow(&mut self, index: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 410 | fn branch_borrow_from_left(&mut self, left: usize, key: usize, right: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 435 | fn branch_merge(&mut self, left: usize, key: usize, right: usize) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 451 | fn branch_borrow_from_right(&mut self, left: usize, key: usize, right: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 472 | fn handle_branch_underflow(&mut self, index: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 491 | fn handle_underflow(&mut self, index: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 498 | fn remove_key(&mut self, key: &K) -> Result> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `KV` is never used [INFO] [stdout] --> src/main.rs:89:6 [INFO] [stdout] | [INFO] [stdout] 89 | enum KV { [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `remove_max` and `remove_min` are never used [INFO] [stdout] --> src/main.rs:134:8 [INFO] [stdout] | [INFO] [stdout] 100 | impl Node { [INFO] [stdout] | ---------------------------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 134 | fn remove_max(&mut self) -> KV { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 147 | fn remove_min(&mut self) -> KV { [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 12.72s [INFO] running `Command { std: "docker" "inspect" "7775cdddfaf6e037899ed44d363c3bc76963664e2b392fd91f2be3b5506a99b1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7775cdddfaf6e037899ed44d363c3bc76963664e2b392fd91f2be3b5506a99b1", kill_on_drop: false }` [INFO] [stdout] 7775cdddfaf6e037899ed44d363c3bc76963664e2b392fd91f2be3b5506a99b1