[INFO] updating cached repository charlesgdalton/readable-numbers [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/charlesgdalton/readable-numbers [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/charlesgdalton/readable-numbers" "work/ex/beta-1.38-1/sources/1.37.0/gh/charlesgdalton/readable-numbers"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/charlesgdalton/readable-numbers'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/charlesgdalton/readable-numbers" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/charlesgdalton/readable-numbers"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/charlesgdalton/readable-numbers'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 1c3446bd74993821c6736c8680a5421126061c32 [INFO] sha for GitHub repo charlesgdalton/readable-numbers: 1c3446bd74993821c6736c8680a5421126061c32 [INFO] validating manifest of charlesgdalton/readable-numbers on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of charlesgdalton/readable-numbers on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing charlesgdalton/readable-numbers [INFO] finished frobbing charlesgdalton/readable-numbers [INFO] frobbed toml for charlesgdalton/readable-numbers written to work/ex/beta-1.38-1/sources/1.37.0/gh/charlesgdalton/readable-numbers/Cargo.toml [INFO] started frobbing charlesgdalton/readable-numbers [INFO] finished frobbing charlesgdalton/readable-numbers [INFO] frobbed toml for charlesgdalton/readable-numbers written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/charlesgdalton/readable-numbers/Cargo.toml [INFO] crate charlesgdalton/readable-numbers already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing charlesgdalton/readable-numbers against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/charlesgdalton/readable-numbers:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] 37c6c948dc35919b96cd770c1af93fba950a10279a6d78b44c095807df937422 [INFO] running `"docker" "start" "-a" "37c6c948dc35919b96cd770c1af93fba950a10279a6d78b44c095807df937422"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling parity_interview v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: value assigned to `output` is never read [INFO] [stderr] --> src/main.rs:10:13 [INFO] [stderr] | [INFO] [stderr] 10 | let mut output = String::new(); [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: `e` [INFO] [stderr] --> src/main.rs:14:13 [INFO] [stderr] | [INFO] [stderr] 14 | Err(e) => return println!("Input has to be a positive integer."), [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: value passed to `second_two_storage` is never read [INFO] [stderr] --> src/main.rs:90:26 [INFO] [stderr] | [INFO] [stderr] 90 | fn second_two_digits(mut second_two_storage: String, number: u32) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let mut input_int: u32; [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | io::stdin().read_line(&mut input); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.61s [INFO] running `"docker" "inspect" "37c6c948dc35919b96cd770c1af93fba950a10279a6d78b44c095807df937422"` [INFO] running `"docker" "rm" "-f" "37c6c948dc35919b96cd770c1af93fba950a10279a6d78b44c095807df937422"` [INFO] [stdout] 37c6c948dc35919b96cd770c1af93fba950a10279a6d78b44c095807df937422 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/charlesgdalton/readable-numbers:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] 27129a6099fba401ed998fa3f2bcddcd599482291908ce46e866d7a3c9adffd8 [INFO] running `"docker" "start" "-a" "27129a6099fba401ed998fa3f2bcddcd599482291908ce46e866d7a3c9adffd8"` [INFO] [stderr] Compiling parity_interview v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: value assigned to `output` is never read [INFO] [stderr] --> src/main.rs:10:13 [INFO] [stderr] | [INFO] [stderr] 10 | let mut output = String::new(); [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: `e` [INFO] [stderr] --> src/main.rs:14:13 [INFO] [stderr] | [INFO] [stderr] 14 | Err(e) => return println!("Input has to be a positive integer."), [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: value passed to `second_two_storage` is never read [INFO] [stderr] --> src/main.rs:90:26 [INFO] [stderr] | [INFO] [stderr] 90 | fn second_two_digits(mut second_two_storage: String, number: u32) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let mut input_int: u32; [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | io::stdin().read_line(&mut input); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.59s [INFO] running `"docker" "inspect" "27129a6099fba401ed998fa3f2bcddcd599482291908ce46e866d7a3c9adffd8"` [INFO] running `"docker" "rm" "-f" "27129a6099fba401ed998fa3f2bcddcd599482291908ce46e866d7a3c9adffd8"` [INFO] [stdout] 27129a6099fba401ed998fa3f2bcddcd599482291908ce46e866d7a3c9adffd8 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/charlesgdalton/readable-numbers:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"` [INFO] [stdout] 42542b78a8c3b2009283a52f18f1962a6d8ca960e65e9d3c845820916e906217 [INFO] running `"docker" "start" "-a" "42542b78a8c3b2009283a52f18f1962a6d8ca960e65e9d3c845820916e906217"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running /opt/crater/target/debug/deps/parity_interview-1cd542abca855e8e [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 [INFO] [stdout] [INFO] running `"docker" "inspect" "42542b78a8c3b2009283a52f18f1962a6d8ca960e65e9d3c845820916e906217"` [INFO] running `"docker" "rm" "-f" "42542b78a8c3b2009283a52f18f1962a6d8ca960e65e9d3c845820916e906217"` [INFO] [stdout] 42542b78a8c3b2009283a52f18f1962a6d8ca960e65e9d3c845820916e906217