[INFO] cloning repository https://github.com/sabartheman/Rust_huffman_parallel [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sabartheman/Rust_huffman_parallel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabartheman%2FRust_huffman_parallel", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabartheman%2FRust_huffman_parallel'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9856ae702e29f7289fba9dfd14c861fcacf1362d [INFO] testing sabartheman/Rust_huffman_parallel against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabartheman%2FRust_huffman_parallel" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sabartheman/Rust_huffman_parallel on toolchain b70888601af92f6cdc0364abab3446e418b91d36 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sabartheman/Rust_huffman_parallel [INFO] finished tweaking git repo https://github.com/sabartheman/Rust_huffman_parallel [INFO] tweaked toml for git repo https://github.com/sabartheman/Rust_huffman_parallel written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/sabartheman/Rust_huffman_parallel already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f82c4c002d3fdd24358fb49127cec1f6dd1733a095ebe2f5e21077f8fb45ee93 [INFO] running `Command { std: "docker" "start" "-a" "f82c4c002d3fdd24358fb49127cec1f6dd1733a095ebe2f5e21077f8fb45ee93", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f82c4c002d3fdd24358fb49127cec1f6dd1733a095ebe2f5e21077f8fb45ee93", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f82c4c002d3fdd24358fb49127cec1f6dd1733a095ebe2f5e21077f8fb45ee93", kill_on_drop: false }` [INFO] [stdout] f82c4c002d3fdd24358fb49127cec1f6dd1733a095ebe2f5e21077f8fb45ee93 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b043b4b266c3a6cc7f94c56d854bad0132de9a3205172083eac2ab8b777d78bc [INFO] running `Command { std: "docker" "start" "-a" "b043b4b266c3a6cc7f94c56d854bad0132de9a3205172083eac2ab8b777d78bc", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.34 [INFO] [stderr] Compiling crossbeam v0.3.0 [INFO] [stderr] Compiling time v0.1.38 [INFO] [stderr] Compiling huffman_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/main.rs:103:32 [INFO] [stdout] | [INFO] [stdout] 103 | assign_codes(l, h, (s.clone() + "0")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/main.rs:106:32 [INFO] [stdout] | [INFO] [stdout] 106 | assign_codes(r, h, (s.clone() + "1")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:50:56 [INFO] [stdout] | [INFO] [stdout] 50 | ... why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:57:65 [INFO] [stdout] | [INFO] [stdout] 57 | Err(why) => panic!("couldn't read {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `i` is never read [INFO] [stdout] --> src/main.rs:322:25 [INFO] [stdout] | [INFO] [stdout] 322 | i = i + 1; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `i` is never read [INFO] [stdout] --> src/main.rs:352:25 [INFO] [stdout] | [INFO] [stdout] 352 | i = i + 1; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `i` is never read [INFO] [stdout] --> src/main.rs:381:25 [INFO] [stdout] | [INFO] [stdout] 381 | i = i + 1; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `i` is never read [INFO] [stdout] --> src/main.rs:410:25 [INFO] [stdout] | [INFO] [stdout] 410 | i = i + 1; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/main.rs:499:16 [INFO] [stdout] | [INFO] [stdout] 499 | if let Err(e) = writeln!(file, "{},{},{},{},{},{},{},", tp1_finish - tp1_start, tp2_finish - tp2_start, tp3_finish - tp3_start, tp4_f... [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.45s [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "b043b4b266c3a6cc7f94c56d854bad0132de9a3205172083eac2ab8b777d78bc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b043b4b266c3a6cc7f94c56d854bad0132de9a3205172083eac2ab8b777d78bc", kill_on_drop: false }` [INFO] [stdout] b043b4b266c3a6cc7f94c56d854bad0132de9a3205172083eac2ab8b777d78bc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ba6cba6199337bc315526c947376ada98432c82b1f41bb5e6e01496f455e9b0a [INFO] running `Command { std: "docker" "start" "-a" "ba6cba6199337bc315526c947376ada98432c82b1f41bb5e6e01496f455e9b0a", kill_on_drop: false }` [INFO] [stderr] Compiling huffman_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/main.rs:103:32 [INFO] [stdout] | [INFO] [stdout] 103 | assign_codes(l, h, (s.clone() + "0")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/main.rs:106:32 [INFO] [stdout] | [INFO] [stdout] 106 | assign_codes(r, h, (s.clone() + "1")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:50:56 [INFO] [stdout] | [INFO] [stdout] 50 | ... why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:57:65 [INFO] [stdout] | [INFO] [stdout] 57 | Err(why) => panic!("couldn't read {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `i` is never read [INFO] [stdout] --> src/main.rs:322:25 [INFO] [stdout] | [INFO] [stdout] 322 | i = i + 1; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `i` is never read [INFO] [stdout] --> src/main.rs:352:25 [INFO] [stdout] | [INFO] [stdout] 352 | i = i + 1; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `i` is never read [INFO] [stdout] --> src/main.rs:381:25 [INFO] [stdout] | [INFO] [stdout] 381 | i = i + 1; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `i` is never read [INFO] [stdout] --> src/main.rs:410:25 [INFO] [stdout] | [INFO] [stdout] 410 | i = i + 1; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/main.rs:499:16 [INFO] [stdout] | [INFO] [stdout] 499 | if let Err(e) = writeln!(file, "{},{},{},{},{},{},{},", tp1_finish - tp1_start, tp2_finish - tp2_start, tp3_finish - tp3_start, tp4_f... [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.70s [INFO] running `Command { std: "docker" "inspect" "ba6cba6199337bc315526c947376ada98432c82b1f41bb5e6e01496f455e9b0a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ba6cba6199337bc315526c947376ada98432c82b1f41bb5e6e01496f455e9b0a", kill_on_drop: false }` [INFO] [stdout] ba6cba6199337bc315526c947376ada98432c82b1f41bb5e6e01496f455e9b0a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 4c53de0e4a6e41458cf1a91d727742650480abf808c84e4e4226bc62ba337aec [INFO] running `Command { std: "docker" "start" "-a" "4c53de0e4a6e41458cf1a91d727742650480abf808c84e4e4226bc62ba337aec", kill_on_drop: false }` [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/main.rs:103:32 [INFO] [stderr] | [INFO] [stderr] 103 | assign_codes(l, h, (s.clone() + "0")); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/main.rs:106:32 [INFO] [stderr] | [INFO] [stderr] 106 | assign_codes(r, h, (s.clone() + "1")); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stderr] --> src/main.rs:50:56 [INFO] [stderr] | [INFO] [stderr] 50 | ... why.description()), [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stderr] --> src/main.rs:57:65 [INFO] [stderr] | [INFO] [stderr] 57 | Err(why) => panic!("couldn't read {}: {}", display, why.description()), [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: value assigned to `i` is never read [INFO] [stderr] --> src/main.rs:322:25 [INFO] [stderr] | [INFO] [stderr] 322 | i = i + 1; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `i` is never read [INFO] [stderr] --> src/main.rs:352:25 [INFO] [stderr] | [INFO] [stderr] 352 | i = i + 1; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `i` is never read [INFO] [stderr] --> src/main.rs:381:25 [INFO] [stderr] | [INFO] [stderr] 381 | i = i + 1; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `i` is never read [INFO] [stderr] --> src/main.rs:410:25 [INFO] [stderr] | [INFO] [stderr] 410 | i = i + 1; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:499:16 [INFO] [stderr] | [INFO] [stderr] 499 | if let Err(e) = writeln!(file, "{},{},{},{},{},{},{},", tp1_finish - tp1_start, tp2_finish - tp2_start, tp3_finish - tp3_start, tp4_f... [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `huffman_rust` (bin "huffman_rust" test) generated 9 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/huffman_rust-b4ff8f7a1c7ec3b2) [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" "4c53de0e4a6e41458cf1a91d727742650480abf808c84e4e4226bc62ba337aec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4c53de0e4a6e41458cf1a91d727742650480abf808c84e4e4226bc62ba337aec", kill_on_drop: false }` [INFO] [stdout] 4c53de0e4a6e41458cf1a91d727742650480abf808c84e4e4226bc62ba337aec