[INFO] cloning repository https://github.com/V-Mann-Nick/huffman [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/V-Mann-Nick/huffman" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FV-Mann-Nick%2Fhuffman", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FV-Mann-Nick%2Fhuffman'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] adbdfbf204a16da5a95431088547f1ae30a20079 [INFO] testing V-Mann-Nick/huffman against 1.59.0 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FV-Mann-Nick%2Fhuffman" "/workspace/builds/worker-84/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-84/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/V-Mann-Nick/huffman on toolchain 1.59.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/V-Mann-Nick/huffman [INFO] finished tweaking git repo https://github.com/V-Mann-Nick/huffman [INFO] tweaked toml for git repo https://github.com/V-Mann-Nick/huffman written to /workspace/builds/worker-84/source/Cargo.toml [INFO] crate git repo https://github.com/V-Mann-Nick/huffman already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 12559c890ad051b65fa44c3e08c843cd0b967e9e26b8c85709ffc4f473712c53 [INFO] running `Command { std: "docker" "start" "-a" "12559c890ad051b65fa44c3e08c843cd0b967e9e26b8c85709ffc4f473712c53", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "12559c890ad051b65fa44c3e08c843cd0b967e9e26b8c85709ffc4f473712c53", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "12559c890ad051b65fa44c3e08c843cd0b967e9e26b8c85709ffc4f473712c53", kill_on_drop: false }` [INFO] [stdout] 12559c890ad051b65fa44c3e08c843cd0b967e9e26b8c85709ffc4f473712c53 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7b8392bfa1b8bf0c9aea8ced4d2229d067f9994f9a275b500b23ebf38a95a9d0 [INFO] running `Command { std: "docker" "start" "-a" "7b8392bfa1b8bf0c9aea8ced4d2229d067f9994f9a275b500b23ebf38a95a9d0", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.94 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling arrayvec v0.4.12 [INFO] [stderr] Compiling hashbrown v0.9.1 [INFO] [stderr] Compiling nodrop v0.1.14 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling itoa v0.4.7 [INFO] [stderr] Compiling endio_bit v0.2.0 [INFO] [stderr] Compiling bit-vec v0.6.3 [INFO] [stderr] Compiling indexmap v1.6.2 [INFO] [stderr] Compiling priority-queue v1.1.1 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling termprogress v0.3.4 [INFO] [stderr] Compiling num-format v0.4.0 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling huffman v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/encode.rs:61:9 [INFO] [stdout] | [INFO] [stdout] 61 | &self.codes_from_node(root, BitVec::new(), &mut code_map); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 61 | let _ = &self.codes_from_node(root, BitVec::new(), &mut code_map); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/encode.rs:72:17 [INFO] [stdout] | [INFO] [stdout] 72 | &self.codes_from_node(&branch.unwrap(), bits, code_map); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 72 | let _ = &self.codes_from_node(&branch.unwrap(), bits, code_map); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 30s [INFO] running `Command { std: "docker" "inspect" "7b8392bfa1b8bf0c9aea8ced4d2229d067f9994f9a275b500b23ebf38a95a9d0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7b8392bfa1b8bf0c9aea8ced4d2229d067f9994f9a275b500b23ebf38a95a9d0", kill_on_drop: false }` [INFO] [stdout] 7b8392bfa1b8bf0c9aea8ced4d2229d067f9994f9a275b500b23ebf38a95a9d0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9a18fe0c1a17e69372996fc1c75ef4a5eb74c9f9bc368794d85adc04e14d5251 [INFO] running `Command { std: "docker" "start" "-a" "9a18fe0c1a17e69372996fc1c75ef4a5eb74c9f9bc368794d85adc04e14d5251", kill_on_drop: false }` [INFO] [stderr] Compiling huffman v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/encode.rs:61:9 [INFO] [stdout] | [INFO] [stdout] 61 | &self.codes_from_node(root, BitVec::new(), &mut code_map); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 61 | let _ = &self.codes_from_node(root, BitVec::new(), &mut code_map); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/encode.rs:72:17 [INFO] [stdout] | [INFO] [stdout] 72 | &self.codes_from_node(&branch.unwrap(), bits, code_map); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 72 | let _ = &self.codes_from_node(&branch.unwrap(), bits, code_map); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/encode.rs:61:9 [INFO] [stdout] | [INFO] [stdout] 61 | &self.codes_from_node(root, BitVec::new(), &mut code_map); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 61 | let _ = &self.codes_from_node(root, BitVec::new(), &mut code_map); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/encode.rs:72:17 [INFO] [stdout] | [INFO] [stdout] 72 | &self.codes_from_node(&branch.unwrap(), bits, code_map); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 72 | let _ = &self.codes_from_node(&branch.unwrap(), bits, code_map); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.64s [INFO] running `Command { std: "docker" "inspect" "9a18fe0c1a17e69372996fc1c75ef4a5eb74c9f9bc368794d85adc04e14d5251", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9a18fe0c1a17e69372996fc1c75ef4a5eb74c9f9bc368794d85adc04e14d5251", kill_on_drop: false }` [INFO] [stdout] 9a18fe0c1a17e69372996fc1c75ef4a5eb74c9f9bc368794d85adc04e14d5251 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] d91a7af2c3bd732ec83b8b438c3b347723c04e391d25dc338f554e1be801174e [INFO] running `Command { std: "docker" "start" "-a" "d91a7af2c3bd732ec83b8b438c3b347723c04e391d25dc338f554e1be801174e", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/encode.rs:61:9 [INFO] [stderr] | [INFO] [stderr] 61 | &self.codes_from_node(root, BitVec::new(), &mut code_map); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 61 | let _ = &self.codes_from_node(root, BitVec::new(), &mut code_map); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/encode.rs:72:17 [INFO] [stderr] | [INFO] [stderr] 72 | &self.codes_from_node(&branch.unwrap(), bits, code_map); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 72 | let _ = &self.codes_from_node(&branch.unwrap(), bits, code_map); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `huffman` (lib) generated 2 warnings [INFO] [stderr] warning: `huffman` (lib test) generated 2 warnings (2 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.16s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/huffman-88784c482e9d5f89) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/huf-5083b3bd02328072) [INFO] [stderr] Doc-tests huffman [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "d91a7af2c3bd732ec83b8b438c3b347723c04e391d25dc338f554e1be801174e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d91a7af2c3bd732ec83b8b438c3b347723c04e391d25dc338f554e1be801174e", kill_on_drop: false }` [INFO] [stdout] d91a7af2c3bd732ec83b8b438c3b347723c04e391d25dc338f554e1be801174e