[INFO] fetching crate frank 0.1.3... [INFO] testing frank-0.1.3 against beta-2021-09-08 for beta-1.56-1 [INFO] extracting crate frank 0.1.3 into /workspace/builds/worker-42/source [INFO] validating manifest of crates.io crate frank 0.1.3 on toolchain beta-2021-09-08 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate frank 0.1.3 [INFO] finished tweaking crates.io crate frank 0.1.3 [INFO] tweaked toml for crates.io crate frank 0.1.3 written to /workspace/builds/worker-42/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e5bef194845f39edf536fa97d7d3542e54234082f3bca45060888bd724140111 [INFO] running `Command { std: "docker" "start" "-a" "e5bef194845f39edf536fa97d7d3542e54234082f3bca45060888bd724140111", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e5bef194845f39edf536fa97d7d3542e54234082f3bca45060888bd724140111", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e5bef194845f39edf536fa97d7d3542e54234082f3bca45060888bd724140111", kill_on_drop: false }` [INFO] [stdout] e5bef194845f39edf536fa97d7d3542e54234082f3bca45060888bd724140111 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 33cebbc3b28821a6ab255ad1b88d71583e06fcc2f863f2e8ae893b53f5e5c26e [INFO] running `Command { std: "docker" "start" "-a" "33cebbc3b28821a6ab255ad1b88d71583e06fcc2f863f2e8ae893b53f5e5c26e", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling frank v0.1.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `remains` is never read [INFO] [stdout] --> src/lib.rs:415:13 [INFO] [stdout] | [INFO] [stdout] 415 | let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly. Play that fiddle... [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `remains` is never read [INFO] [stdout] --> src/main.rs:415:13 [INFO] [stdout] | [INFO] [stdout] 415 | let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly. Play that fiddle... [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: unused variable: `rcl` [INFO] [stdout] --> src/main.rs:489:9 [INFO] [stdout] | [INFO] [stdout] 489 | let rcl = rank_count_lesser(&spinning); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rcl` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [optimized + debuginfo] target(s) in 9.83s [INFO] running `Command { std: "docker" "inspect" "33cebbc3b28821a6ab255ad1b88d71583e06fcc2f863f2e8ae893b53f5e5c26e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "33cebbc3b28821a6ab255ad1b88d71583e06fcc2f863f2e8ae893b53f5e5c26e", kill_on_drop: false }` [INFO] [stdout] 33cebbc3b28821a6ab255ad1b88d71583e06fcc2f863f2e8ae893b53f5e5c26e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9e14c1803e2f02b3d7cb670a01dfe3353a164b2ea8db2ab5d32a2f8f52d56f12 [INFO] running `Command { std: "docker" "start" "-a" "9e14c1803e2f02b3d7cb670a01dfe3353a164b2ea8db2ab5d32a2f8f52d56f12", kill_on_drop: false }` [INFO] [stderr] Compiling frank v0.1.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `remains` is never read [INFO] [stdout] --> src/lib.rs:415:13 [INFO] [stdout] | [INFO] [stdout] 415 | let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly. Play that fiddle... [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `remains` is never read [INFO] [stdout] --> src/main.rs:415:13 [INFO] [stdout] | [INFO] [stdout] 415 | let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly. Play that fiddle... [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: unused variable: `rcl` [INFO] [stdout] --> src/main.rs:489:9 [INFO] [stdout] | [INFO] [stdout] 489 | let rcl = rank_count_lesser(&spinning); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rcl` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `remains` is never read [INFO] [stdout] --> src/lib.rs:415:13 [INFO] [stdout] | [INFO] [stdout] 415 | let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly. Play that fiddle... [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [optimized + debuginfo] target(s) in 2.02s [INFO] running `Command { std: "docker" "inspect" "9e14c1803e2f02b3d7cb670a01dfe3353a164b2ea8db2ab5d32a2f8f52d56f12", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9e14c1803e2f02b3d7cb670a01dfe3353a164b2ea8db2ab5d32a2f8f52d56f12", kill_on_drop: false }` [INFO] [stdout] 9e14c1803e2f02b3d7cb670a01dfe3353a164b2ea8db2ab5d32a2f8f52d56f12 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] e48f6dd3a53d99d9dc9240e595c1fdafd2acf1773d7b1ba0e2b7a7d9c3950eef [INFO] running `Command { std: "docker" "start" "-a" "e48f6dd3a53d99d9dc9240e595c1fdafd2acf1773d7b1ba0e2b7a7d9c3950eef", kill_on_drop: false }` [INFO] [stderr] warning: value assigned to `remains` is never read [INFO] [stderr] --> src/lib.rs:415:13 [INFO] [stderr] | [INFO] [stderr] 415 | let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly. Play that fiddle... [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: `frank` (lib) generated 1 warning [INFO] [stderr] warning: value assigned to `remains` is never read [INFO] [stderr] --> src/main.rs:415:13 [INFO] [stderr] | [INFO] [stderr] 415 | let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly. Play that fiddle... [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: unused variable: `rcl` [INFO] [stderr] --> src/main.rs:489:9 [INFO] [stderr] | [INFO] [stderr] 489 | let rcl = rank_count_lesser(&spinning); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_rcl` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `frank` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] warning: `frank` (bin "frank" test) generated 2 warnings [INFO] [stderr] Finished test [optimized + debuginfo] target(s) in 0.14s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/frank-6b1cf80a7c0c4d6e) [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/frank-02d57bb3847cf37d) [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] Doc-tests frank [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" "e48f6dd3a53d99d9dc9240e595c1fdafd2acf1773d7b1ba0e2b7a7d9c3950eef", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e48f6dd3a53d99d9dc9240e595c1fdafd2acf1773d7b1ba0e2b7a7d9c3950eef", kill_on_drop: false }` [INFO] [stdout] e48f6dd3a53d99d9dc9240e595c1fdafd2acf1773d7b1ba0e2b7a7d9c3950eef