[INFO] updating cached repository DaRavenox/Rust [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/DaRavenox/Rust [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/DaRavenox/Rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/DaRavenox/Rust"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/DaRavenox/Rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/DaRavenox/Rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/DaRavenox/Rust"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/DaRavenox/Rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b4507fe6801b4b1075b3b7d82f4388b34eae37e3 [INFO] sha for GitHub repo DaRavenox/Rust: b4507fe6801b4b1075b3b7d82f4388b34eae37e3 [INFO] validating manifest of DaRavenox/Rust 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 DaRavenox/Rust 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 DaRavenox/Rust [INFO] finished frobbing DaRavenox/Rust [INFO] frobbed toml for DaRavenox/Rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/DaRavenox/Rust/Cargo.toml [INFO] started frobbing DaRavenox/Rust [INFO] finished frobbing DaRavenox/Rust [INFO] frobbed toml for DaRavenox/Rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/DaRavenox/Rust/Cargo.toml [INFO] crate DaRavenox/Rust 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 DaRavenox/Rust against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/DaRavenox/Rust:/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" "+1.37.0" "build" "--frozen"` [INFO] [stdout] 6c4e52477b796bb759150306ce236bcc9200d283b6c349d06f55d58d3cc94182 [INFO] running `"docker" "start" "-a" "6c4e52477b796bb759150306ce236bcc9200d283b6c349d06f55d58d3cc94182"` [INFO] [stderr] Compiling hello_rust v0.0.1 (/opt/crater/workdir) [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:3:12 [INFO] [stderr] | [INFO] [stderr] 3 | let mut y: i32 = 12; // mutable, this value CAN be changed; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:4:8 [INFO] [stderr] | [INFO] [stderr] 4 | let z:i32; //We initialize a variable; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:66:27 [INFO] [stderr] | [INFO] [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:66:35 [INFO] [stderr] | [INFO] [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:78:13 [INFO] [stderr] | [INFO] [stderr] 78 | fn diverges(x: i32) -> !{ [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:3:8 [INFO] [stderr] | [INFO] [stderr] 3 | let mut y: i32 = 12; // mutable, this value CAN be changed; [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/main.rs:18:9 [INFO] [stderr] | [INFO] [stderr] 18 | let mut x = 7; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `diverges` [INFO] [stderr] --> src/main.rs:78:1 [INFO] [stderr] | [INFO] [stderr] 78 | fn diverges(x: i32) -> !{ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: function `testBorrow` should have a snake case name [INFO] [stderr] --> src/main.rs:229:4 [INFO] [stderr] | [INFO] [stderr] 229 | fn testBorrow(v1: &mut Vec, v2: &mut Vec){ [INFO] [stderr] | ^^^^^^^^^^ help: convert the identifier to snake case: `test_borrow` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_snake_case)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.84s [INFO] running `"docker" "inspect" "6c4e52477b796bb759150306ce236bcc9200d283b6c349d06f55d58d3cc94182"` [INFO] running `"docker" "rm" "-f" "6c4e52477b796bb759150306ce236bcc9200d283b6c349d06f55d58d3cc94182"` [INFO] [stdout] 6c4e52477b796bb759150306ce236bcc9200d283b6c349d06f55d58d3cc94182 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/DaRavenox/Rust:/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" "+1.37.0" "test" "--frozen" "--no-run"` [INFO] [stdout] 8b396685fc280eef8461adb414ca4f8f1da36622d2aa005f73f6cd4660740956 [INFO] running `"docker" "start" "-a" "8b396685fc280eef8461adb414ca4f8f1da36622d2aa005f73f6cd4660740956"` [INFO] [stderr] Compiling hello_rust v0.0.1 (/opt/crater/workdir) [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:3:12 [INFO] [stderr] | [INFO] [stderr] 3 | let mut y: i32 = 12; // mutable, this value CAN be changed; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:4:8 [INFO] [stderr] | [INFO] [stderr] 4 | let z:i32; //We initialize a variable; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:66:27 [INFO] [stderr] | [INFO] [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:66:35 [INFO] [stderr] | [INFO] [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:78:13 [INFO] [stderr] | [INFO] [stderr] 78 | fn diverges(x: i32) -> !{ [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:3:8 [INFO] [stderr] | [INFO] [stderr] 3 | let mut y: i32 = 12; // mutable, this value CAN be changed; [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/main.rs:18:9 [INFO] [stderr] | [INFO] [stderr] 18 | let mut x = 7; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `diverges` [INFO] [stderr] --> src/main.rs:78:1 [INFO] [stderr] | [INFO] [stderr] 78 | fn diverges(x: i32) -> !{ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: function `testBorrow` should have a snake case name [INFO] [stderr] --> src/main.rs:229:4 [INFO] [stderr] | [INFO] [stderr] 229 | fn testBorrow(v1: &mut Vec, v2: &mut Vec){ [INFO] [stderr] | ^^^^^^^^^^ help: convert the identifier to snake case: `test_borrow` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_snake_case)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.81s [INFO] running `"docker" "inspect" "8b396685fc280eef8461adb414ca4f8f1da36622d2aa005f73f6cd4660740956"` [INFO] running `"docker" "rm" "-f" "8b396685fc280eef8461adb414ca4f8f1da36622d2aa005f73f6cd4660740956"` [INFO] [stdout] 8b396685fc280eef8461adb414ca4f8f1da36622d2aa005f73f6cd4660740956 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/DaRavenox/Rust:/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" "+1.37.0" "test" "--frozen"` [INFO] [stdout] 2c09c75aeed464261bbc7ce6b677dc55bfe8d4960cd7c272e48c4eae2ebc1e75 [INFO] running `"docker" "start" "-a" "2c09c75aeed464261bbc7ce6b677dc55bfe8d4960cd7c272e48c4eae2ebc1e75"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/hello_rust-018d47c47b04cadc [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" "2c09c75aeed464261bbc7ce6b677dc55bfe8d4960cd7c272e48c4eae2ebc1e75"` [INFO] running `"docker" "rm" "-f" "2c09c75aeed464261bbc7ce6b677dc55bfe8d4960cd7c272e48c4eae2ebc1e75"` [INFO] [stdout] 2c09c75aeed464261bbc7ce6b677dc55bfe8d4960cd7c272e48c4eae2ebc1e75