[INFO] cloning repository https://github.com/njohnchi/hello-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/njohnchi/hello-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnjohnchi%2Fhello-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnjohnchi%2Fhello-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57ac8f383c06506e128439aa2bdca07261c9345f
[INFO] testing njohnchi/hello-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%2Fnjohnchi%2Fhello-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/njohnchi/hello-rust
[INFO] finished tweaking git repo https://github.com/njohnchi/hello-rust
[INFO] tweaked toml for git repo https://github.com/njohnchi/hello-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/njohnchi/hello-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/njohnchi/hello-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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 936208bc3e1c866c714719fbcb5f7d893483384e3459b2708228627bddda7297
[INFO] running `Command { std: "docker" "start" "-a" "936208bc3e1c866c714719fbcb5f7d893483384e3459b2708228627bddda7297", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "936208bc3e1c866c714719fbcb5f7d893483384e3459b2708228627bddda7297", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "936208bc3e1c866c714719fbcb5f7d893483384e3459b2708228627bddda7297", kill_on_drop: false }`
[INFO] [stdout] 936208bc3e1c866c714719fbcb5f7d893483384e3459b2708228627bddda7297
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ae08b5962a5ed8ff5a3ab66002dc02847df2c9078c1e2504a0eefe9707e2dd07
[INFO] running `Command { std: "docker" "start" "-a" "ae08b5962a5ed8ff5a3ab66002dc02847df2c9078c1e2504a0eefe9707e2dd07", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling libc v0.2.168
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `is_lower` is never used
[INFO] [stdout]  --> src/utils.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn is_lower(character: char) -> bool {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_upper` is never used
[INFO] [stdout]  --> src/utils.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn is_upper(character: char) -> bool {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `abs` is never used
[INFO] [stdout]   --> src/utils.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn abs(number: i64) -> i64 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_alpha` is never used
[INFO] [stdout]   --> src/utils.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn is_alpha(character: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_digit` is never used
[INFO] [stdout]   --> src/utils.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn is_digit(character: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mul` is never used
[INFO] [stdout]   --> src/utils.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn mul(num1: i64, num2: i64) -> i64 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hello::string::MyString`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hello::string::MyString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut new_string = String::from("hello world");
[INFO] [stdout]   |         ----^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.31s
[INFO] running `Command { std: "docker" "inspect" "ae08b5962a5ed8ff5a3ab66002dc02847df2c9078c1e2504a0eefe9707e2dd07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae08b5962a5ed8ff5a3ab66002dc02847df2c9078c1e2504a0eefe9707e2dd07", kill_on_drop: false }`
[INFO] [stdout] ae08b5962a5ed8ff5a3ab66002dc02847df2c9078c1e2504a0eefe9707e2dd07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] dc9fd6d0b39e6a12b78b6e4a9c5d662ca7a56a4a9f8f7a2b7e0e4d602fb1759d
[INFO] running `Command { std: "docker" "start" "-a" "dc9fd6d0b39e6a12b78b6e4a9c5d662ca7a56a4a9f8f7a2b7e0e4d602fb1759d", kill_on_drop: false }`
[INFO] [stdout] warning: function `is_lower` is never used
[INFO] [stdout]  --> src/utils.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn is_lower(character: char) -> bool {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_upper` is never used
[INFO] [stdout]  --> src/utils.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn is_upper(character: char) -> bool {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `abs` is never used
[INFO] [stdout]   --> src/utils.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn abs(number: i64) -> i64 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_alpha` is never used
[INFO] [stdout]   --> src/utils.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn is_alpha(character: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_digit` is never used
[INFO] [stdout]   --> src/utils.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn is_digit(character: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mul` is never used
[INFO] [stdout]   --> src/utils.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn mul(num1: i64, num2: i64) -> i64 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hello::string::MyString`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hello::string::MyString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut new_string = String::from("hello world");
[INFO] [stdout]   |         ----^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "dc9fd6d0b39e6a12b78b6e4a9c5d662ca7a56a4a9f8f7a2b7e0e4d602fb1759d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc9fd6d0b39e6a12b78b6e4a9c5d662ca7a56a4a9f8f7a2b7e0e4d602fb1759d", kill_on_drop: false }`
[INFO] [stdout] dc9fd6d0b39e6a12b78b6e4a9c5d662ca7a56a4a9f8f7a2b7e0e4d602fb1759d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 6cb14af443dc4db5237c8814eb3854690cf25536cf49cb19af70e2573279251f
[INFO] running `Command { std: "docker" "start" "-a" "6cb14af443dc4db5237c8814eb3854690cf25536cf49cb19af70e2573279251f", kill_on_drop: false }`
[INFO] [stderr] warning: function `is_lower` is never used
[INFO] [stderr]  --> src/utils.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn is_lower(character: char) -> bool {
[INFO] [stderr]   |    ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_upper` is never used
[INFO] [stderr]  --> src/utils.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn is_upper(character: char) -> bool {
[INFO] [stderr]   |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `abs` is never used
[INFO] [stderr]   --> src/utils.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn abs(number: i64) -> i64 {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_alpha` is never used
[INFO] [stderr]   --> src/utils.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn is_alpha(character: char) -> bool {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_digit` is never used
[INFO] [stderr]   --> src/utils.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn is_digit(character: char) -> bool {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `mul` is never used
[INFO] [stderr]   --> src/utils.rs:41:4
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn mul(num1: i64, num2: i64) -> i64 {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `hello` (lib) generated 6 warnings
[INFO] [stderr] warning: unused import: `hello::string::MyString`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use hello::string::MyString;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut new_string = String::from("hello world");
[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: `hello` (bin "hello" test) generated 2 warnings (run `cargo fix --bin "hello" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/hello-f5a7b870c1c0d8cb)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test string::test_string::it_creates_empty_string ... ok
[INFO] [stdout] test string::test_string::it_creates_string_from_str ... ok
[INFO] [stdout] test utils::test_utils::abs_should_panic_for_min - should panic ... FAILED
[INFO] [stdout] test utils::test_utils::it_is_alpha ... ok
[INFO] [stdout] test utils::test_utils::it_is_digit ... ok
[INFO] [stdout] test string::test_string::it_returns_length_of_string ... ok
[INFO] [stdout] test string::test_string::it_push_char_to_my_string ... ok
[INFO] [stdout] test utils::test_utils::it_is_lower ... ok
[INFO] [stdout] test string::test_string::it_push_str_to_my_string ... ok
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stdout] test utils::test_utils::it_is_upper ... ok
[INFO] [stdout] test utils::test_utils::returns_abs ... ok
[INFO] [stdout] test utils::test_utils::it_multiples ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- utils::test_utils::abs_should_panic_for_min stdout ----
[INFO] [stdout] note: test did not panic as expected at src/utils.rs:102:8
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     utils::test_utils::abs_should_panic_for_min
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 11 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6cb14af443dc4db5237c8814eb3854690cf25536cf49cb19af70e2573279251f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cb14af443dc4db5237c8814eb3854690cf25536cf49cb19af70e2573279251f", kill_on_drop: false }`
[INFO] [stdout] 6cb14af443dc4db5237c8814eb3854690cf25536cf49cb19af70e2573279251f
