[INFO] updating cached repository wismer/caesar-cipher [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/wismer/caesar-cipher [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/wismer/caesar-cipher" "work/ex/beta-1.38-1/sources/1.37.0/gh/wismer/caesar-cipher"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/wismer/caesar-cipher'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/wismer/caesar-cipher" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wismer/caesar-cipher"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wismer/caesar-cipher'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] cda2f26c1e779c0c72a97c4388eab53d6fb84041 [INFO] sha for GitHub repo wismer/caesar-cipher: cda2f26c1e779c0c72a97c4388eab53d6fb84041 [INFO] validating manifest of wismer/caesar-cipher 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 wismer/caesar-cipher 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 wismer/caesar-cipher [INFO] finished frobbing wismer/caesar-cipher [INFO] frobbed toml for wismer/caesar-cipher written to work/ex/beta-1.38-1/sources/1.37.0/gh/wismer/caesar-cipher/Cargo.toml [INFO] started frobbing wismer/caesar-cipher [INFO] finished frobbing wismer/caesar-cipher [INFO] frobbed toml for wismer/caesar-cipher written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wismer/caesar-cipher/Cargo.toml [INFO] crate wismer/caesar-cipher 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 wismer/caesar-cipher 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-3/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/wismer/caesar-cipher:/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] 452efe3c4e801cdc5006edf19c4047b042d24b92d9332d2e7b60cae562e2783c [INFO] running `"docker" "start" "-a" "452efe3c4e801cdc5006edf19c4047b042d24b92d9332d2e7b60cae562e2783c"` [INFO] [stderr] Compiling caesar-cipher v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::io` [INFO] [stderr] --> src/euler/euler.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::io; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `remainder` [INFO] [stderr] --> src/euler/euler.rs:40:24 [INFO] [stderr] | [INFO] [stderr] 40 | fn calculate_remainder(remainder: &mut i32) { [INFO] [stderr] | ^^^^^^^^^ help: consider prefixing with an underscore: `_remainder` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/euler/euler.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let mut total_number = 0u64; [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: variable does not need to be mutable [INFO] [stderr] --> src/euler/euler.rs:19:13 [INFO] [stderr] | [INFO] [stderr] 19 | let mut remainder_val = numbers.iter().fold(0, |acc, &c| { [INFO] [stderr] | ----^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Neither` [INFO] [stderr] --> src/main.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | Neither [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `calculate_remainder` [INFO] [stderr] --> src/euler/euler.rs:40:1 [INFO] [stderr] | [INFO] [stderr] 40 | fn calculate_remainder(remainder: &mut i32) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `line_total` [INFO] [stderr] --> src/euler/euler.rs:44:1 [INFO] [stderr] | [INFO] [stderr] 44 | fn line_total(line: &str) -> u64 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/euler/euler.rs:14:5 [INFO] [stderr] | [INFO] [stderr] 14 | file.read_to_string(&mut contents); [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 1.11s [INFO] running `"docker" "inspect" "452efe3c4e801cdc5006edf19c4047b042d24b92d9332d2e7b60cae562e2783c"` [INFO] running `"docker" "rm" "-f" "452efe3c4e801cdc5006edf19c4047b042d24b92d9332d2e7b60cae562e2783c"` [INFO] [stdout] 452efe3c4e801cdc5006edf19c4047b042d24b92d9332d2e7b60cae562e2783c [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/wismer/caesar-cipher:/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] 56a7d6cc74dfc4b1d1ba09dc053844c071588a68a70f7bb10d4aac17adb783a1 [INFO] running `"docker" "start" "-a" "56a7d6cc74dfc4b1d1ba09dc053844c071588a68a70f7bb10d4aac17adb783a1"` [INFO] [stderr] Compiling caesar-cipher v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::io` [INFO] [stderr] --> src/euler/euler.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::io; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `remainder` [INFO] [stderr] --> src/euler/euler.rs:40:24 [INFO] [stderr] | [INFO] [stderr] 40 | fn calculate_remainder(remainder: &mut i32) { [INFO] [stderr] | ^^^^^^^^^ help: consider prefixing with an underscore: `_remainder` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/euler/euler.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let mut total_number = 0u64; [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: variable does not need to be mutable [INFO] [stderr] --> src/euler/euler.rs:19:13 [INFO] [stderr] | [INFO] [stderr] 19 | let mut remainder_val = numbers.iter().fold(0, |acc, &c| { [INFO] [stderr] | ----^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Neither` [INFO] [stderr] --> src/main.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | Neither [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `calculate_remainder` [INFO] [stderr] --> src/euler/euler.rs:40:1 [INFO] [stderr] | [INFO] [stderr] 40 | fn calculate_remainder(remainder: &mut i32) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `line_total` [INFO] [stderr] --> src/euler/euler.rs:44:1 [INFO] [stderr] | [INFO] [stderr] 44 | fn line_total(line: &str) -> u64 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/euler/euler.rs:14:5 [INFO] [stderr] | [INFO] [stderr] 14 | file.read_to_string(&mut contents); [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 0.64s [INFO] running `"docker" "inspect" "56a7d6cc74dfc4b1d1ba09dc053844c071588a68a70f7bb10d4aac17adb783a1"` [INFO] running `"docker" "rm" "-f" "56a7d6cc74dfc4b1d1ba09dc053844c071588a68a70f7bb10d4aac17adb783a1"` [INFO] [stdout] 56a7d6cc74dfc4b1d1ba09dc053844c071588a68a70f7bb10d4aac17adb783a1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/wismer/caesar-cipher:/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] e3bb5ea67717139e648ee8d99a50ce5dc40dcc5ac6d57c27f577edeb28de65b1 [INFO] running `"docker" "start" "-a" "e3bb5ea67717139e648ee8d99a50ce5dc40dcc5ac6d57c27f577edeb28de65b1"` [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stdout] running 0 tests [INFO] [stderr] Running /opt/crater/target/debug/deps/caesar_cipher-b5d74960efcf34f8 [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "e3bb5ea67717139e648ee8d99a50ce5dc40dcc5ac6d57c27f577edeb28de65b1"` [INFO] running `"docker" "rm" "-f" "e3bb5ea67717139e648ee8d99a50ce5dc40dcc5ac6d57c27f577edeb28de65b1"` [INFO] [stdout] e3bb5ea67717139e648ee8d99a50ce5dc40dcc5ac6d57c27f577edeb28de65b1