[INFO] cloning repository https://github.com/Ahmed9190/kata_coding_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ahmed9190/kata_coding_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmed9190%2Fkata_coding_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmed9190%2Fkata_coding_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5965c50d98b4d96b8d38bc03c9705dc344a2a2a3
[INFO] testing Ahmed9190/kata_coding_rust against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmed9190%2Fkata_coding_rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Ahmed9190/kata_coding_rust
[INFO] finished tweaking git repo https://github.com/Ahmed9190/kata_coding_rust
[INFO] tweaked toml for git repo https://github.com/Ahmed9190/kata_coding_rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ahmed9190/kata_coding_rust on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Ahmed9190/kata_coding_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6347505ab2c2238b1f0ae4db2940d10c8e10631a3f06e044b76ee94c4bec49aa
[INFO] running `Command { std: "docker" "start" "-a" "6347505ab2c2238b1f0ae4db2940d10c8e10631a3f06e044b76ee94c4bec49aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6347505ab2c2238b1f0ae4db2940d10c8e10631a3f06e044b76ee94c4bec49aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6347505ab2c2238b1f0ae4db2940d10c8e10631a3f06e044b76ee94c4bec49aa", kill_on_drop: false }`
[INFO] [stdout] 6347505ab2c2238b1f0ae4db2940d10c8e10631a3f06e044b76ee94c4bec49aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 354c77b7e35ca7fb648b5dac8e39a369754bbd6d2f1956fca1bd6934780c3113
[INFO] running `Command { std: "docker" "start" "-a" "354c77b7e35ca7fb648b5dac8e39a369754bbd6d2f1956fca1bd6934780c3113", kill_on_drop: false }`
[INFO] [stderr]    Compiling kata_coding_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `add_two_numbers` is never used
[INFO] [stdout]  --> src/problems/_1_add_two_numbers.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn add_two_numbers(a: i32, b: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_word` is never used
[INFO] [stdout]  --> src/problems/_2_reverse_words.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn reverse_word(text: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `StringX` is never used
[INFO] [stdout]  --> src/problems/_3_is_palindrome.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait StringX {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_palindrome` is never used
[INFO] [stdout]   --> src/problems/_3_is_palindrome.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn is_palindrome(text: String) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fizz_buzz` is never used
[INFO] [stdout]  --> src/problems/_4_fizz_buzz.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn fizz_buzz(number: i32) -> String {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fizz_buzz` is never used
[INFO] [stdout]   --> src/problems/_5_indexed_fizz_buzz.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn fizz_buzz(number: i32) -> Vec<String> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fizz_buzz_decider` is never used
[INFO] [stdout]   --> src/problems/_5_indexed_fizz_buzz.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn fizz_buzz_decider(number: i32) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "354c77b7e35ca7fb648b5dac8e39a369754bbd6d2f1956fca1bd6934780c3113", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "354c77b7e35ca7fb648b5dac8e39a369754bbd6d2f1956fca1bd6934780c3113", kill_on_drop: false }`
[INFO] [stdout] 354c77b7e35ca7fb648b5dac8e39a369754bbd6d2f1956fca1bd6934780c3113
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1e88b0cf62ef75367a9316715a842b4d97b2c291d33c0feae193577b3fc3397
[INFO] running `Command { std: "docker" "start" "-a" "a1e88b0cf62ef75367a9316715a842b4d97b2c291d33c0feae193577b3fc3397", kill_on_drop: false }`
[INFO] [stderr]    Compiling kata_coding_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "a1e88b0cf62ef75367a9316715a842b4d97b2c291d33c0feae193577b3fc3397", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1e88b0cf62ef75367a9316715a842b4d97b2c291d33c0feae193577b3fc3397", kill_on_drop: false }`
[INFO] [stdout] a1e88b0cf62ef75367a9316715a842b4d97b2c291d33c0feae193577b3fc3397
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9471394068b1bddb1b503ca18f1bd4cff20159da787728aec69f0626631f5c26
[INFO] running `Command { std: "docker" "start" "-a" "9471394068b1bddb1b503ca18f1bd4cff20159da787728aec69f0626631f5c26", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/kata_coding_rust-437ebecad94e8988)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::test_3_is_palindrome::test_is_palindrome ... ok
[INFO] [stdout] test tests::test_1_add_two_numbers::test_add_two_numbers ... ok
[INFO] [stdout] test tests::test_5_indexed_fizz_buzz::test_indexed_fizz_buzz ... ok
[INFO] [stdout] test tests::test_2_reverse_words::test_reverse_words ... ok
[INFO] [stdout] test tests::test_4_fizz_buzz::test_fizz_buzz ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9471394068b1bddb1b503ca18f1bd4cff20159da787728aec69f0626631f5c26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9471394068b1bddb1b503ca18f1bd4cff20159da787728aec69f0626631f5c26", kill_on_drop: false }`
[INFO] [stdout] 9471394068b1bddb1b503ca18f1bd4cff20159da787728aec69f0626631f5c26
