[INFO] cloning repository https://github.com/bpol9/rust_huffman [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bpol9/rust_huffman" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpol9%2Frust_huffman", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpol9%2Frust_huffman'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6fd1a2e77f06dcbbe9349105cfa4e65158fff5e2 [INFO] checking bpol9/rust_huffman against master#5431404b87967c69438ea1e698edbe96505f0798 for pr-119849 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpol9%2Frust_huffman" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/bpol9/rust_huffman on toolchain 5431404b87967c69438ea1e698edbe96505f0798 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/bpol9/rust_huffman [INFO] finished tweaking git repo https://github.com/bpol9/rust_huffman [INFO] tweaked toml for git repo https://github.com/bpol9/rust_huffman written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/bpol9/rust_huffman 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" "+5431404b87967c69438ea1e698edbe96505f0798" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking bpol9/rust_huffman against try#21bc403d557a2516df70ea80fb19b94177beede5 for pr-119849 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpol9%2Frust_huffman" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/bpol9/rust_huffman on toolchain 21bc403d557a2516df70ea80fb19b94177beede5 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+21bc403d557a2516df70ea80fb19b94177beede5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/bpol9/rust_huffman [INFO] finished tweaking git repo https://github.com/bpol9/rust_huffman [INFO] tweaked toml for git repo https://github.com/bpol9/rust_huffman written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/bpol9/rust_huffman 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" "+21bc403d557a2516df70ea80fb19b94177beede5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+21bc403d557a2516df70ea80fb19b94177beede5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a5b7eaebebdf75d81a583e18aa29d74563deba2ff48d75ad2a1e3ecc8cb982b4 [INFO] running `Command { std: "docker" "start" "-a" "a5b7eaebebdf75d81a583e18aa29d74563deba2ff48d75ad2a1e3ecc8cb982b4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a5b7eaebebdf75d81a583e18aa29d74563deba2ff48d75ad2a1e3ecc8cb982b4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a5b7eaebebdf75d81a583e18aa29d74563deba2ff48d75ad2a1e3ecc8cb982b4", kill_on_drop: false }` [INFO] [stdout] a5b7eaebebdf75d81a583e18aa29d74563deba2ff48d75ad2a1e3ecc8cb982b4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+21bc403d557a2516df70ea80fb19b94177beede5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 79f6a7bcf3df779618aeafafe81ba1621ea59e2e41ddd796a8e6b7b5154ac881 [INFO] running `Command { std: "docker" "start" "-a" "79f6a7bcf3df779618aeafafe81ba1621ea59e2e41ddd796a8e6b7b5154ac881", kill_on_drop: false }` [INFO] [stderr] Checking huffman_code v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `HuffmanEncoding` is never constructed [INFO] [stdout] --> src/main.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | struct HuffmanEncoding { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `HuffmanNode` is never constructed [INFO] [stdout] --> src/main.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | struct HuffmanNode { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple methods are never used [INFO] [stdout] --> src/main.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 23 | impl HuffmanEncoding { [INFO] [stdout] | -------------------- methods in this implementation [INFO] [stdout] 24 | [INFO] [stdout] 25 | fn add_value(&mut self, value: u64, number_of_bits: u64) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 42 | fn encode(&mut self, text: &String) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 57 | fn get_huffman_encoding(&self, text: &String) -> HashMap { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 63 | fn get_encoding_from_huffman_tree(&self, tree: Rc) -> HashMap { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 73 | fn dfs_huffman_tree(&self, node: Rc, curr_unit_code: HuffmanUnitCode, result: &mut HashMap) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 98 | fn construct_huffman_tree(&self, text: &String) -> Rc { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 117 | fn compute_frequencies(&self, text: &String) -> HashMap { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 127 | fn get_huffman_leaves(&self, text: &String) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 141 | fn decode(&self) -> String { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 177 | fn reverse_encoding_map(&self, map: &HashMap) -> HashMap { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `add_bit_zero`, `add_bit_one`, and `add_msb` are never used [INFO] [stdout] --> src/main.rs:188:8 [INFO] [stdout] | [INFO] [stdout] 187 | impl HuffmanUnitCode { [INFO] [stdout] | -------------------- methods in this implementation [INFO] [stdout] 188 | fn add_bit_zero(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 193 | fn add_bit_one(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 198 | fn add_msb(&mut self, bit: u64) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `take_smallest` is never used [INFO] [stdout] --> src/main.rs:208:4 [INFO] [stdout] | [INFO] [stdout] 208 | fn take_smallest(first: &mut Vec, second: &mut Vec) -> HuffmanNode { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `quick_sort` is never used [INFO] [stdout] --> src/main.rs:221:4 [INFO] [stdout] | [INFO] [stdout] 221 | fn quick_sort(v: &mut [T], f: &F) [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `partition` is never used [INFO] [stdout] --> src/main.rs:232:4 [INFO] [stdout] | [INFO] [stdout] 232 | fn partition(v: &mut [T], f: &F) -> usize [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.08s [INFO] running `Command { std: "docker" "inspect" "79f6a7bcf3df779618aeafafe81ba1621ea59e2e41ddd796a8e6b7b5154ac881", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "79f6a7bcf3df779618aeafafe81ba1621ea59e2e41ddd796a8e6b7b5154ac881", kill_on_drop: false }` [INFO] [stdout] 79f6a7bcf3df779618aeafafe81ba1621ea59e2e41ddd796a8e6b7b5154ac881