[INFO] updating cached repository https://github.com/modeverv/Rust2019 [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b3b7168d3df254b8c9695e73c6d68531f123921d [INFO] testing modeverv/Rust2019 against 1.44.0 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodeverv%2FRust2019" "/workspace/builds/worker-12/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/modeverv/Rust2019 on toolchain 1.44.0 [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/modeverv/Rust2019 [INFO] finished tweaking git repo https://github.com/modeverv/Rust2019 [INFO] tweaked toml for git repo https://github.com/modeverv/Rust2019 written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/modeverv/Rust2019 already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 06993e78fd83fb93db54b345669ecf04d10483df94a89ccf7eef3ff79da83f31 [INFO] running `"docker" "start" "-a" "06993e78fd83fb93db54b345669ecf04d10483df94a89ccf7eef3ff79da83f31"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling hello_world v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `xx` [INFO] [stderr] --> src/main.rs:6:10 [INFO] [stderr] | [INFO] [stderr] 6 | let (xx, y) = (1, 2); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_xx` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `yy` [INFO] [stderr] --> src/main.rs:8:9 [INFO] [stderr] | [INFO] [stderr] 8 | let yy: i32 = 5; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_yy` [INFO] [stderr] [INFO] [stderr] warning: variable `yyy` is assigned to, but never used [INFO] [stderr] --> src/main.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let mut yyy = 5; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_yyy` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `yyy` is never read [INFO] [stderr] --> src/main.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | yyy = 10; [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: `px` [INFO] [stderr] --> src/main.rs:19:9 [INFO] [stderr] | [INFO] [stderr] 19 | let px = true; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_px` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `py` [INFO] [stderr] --> src/main.rs:20:9 [INFO] [stderr] | [INFO] [stderr] 20 | let py:bool = false; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_py` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `pc` [INFO] [stderr] --> src/main.rs:21:9 [INFO] [stderr] | [INFO] [stderr] 21 | let pc:char = 'x'; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_pc` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `middle` [INFO] [stderr] --> src/main.rs:41:9 [INFO] [stderr] | [INFO] [stderr] 41 | let middle = &pa[1..4]; // [1,2,3] [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_middle` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ify` [INFO] [stderr] --> src/main.rs:52:9 [INFO] [stderr] | [INFO] [stderr] 52 | let ify = if x == 5 { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_ify` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ifyy` [INFO] [stderr] --> src/main.rs:57:9 [INFO] [stderr] | [INFO] [stderr] 57 | let ifyy = if x == 5 { 10 } else { 15 }; // y: i32 [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_ifyy` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:37:9 [INFO] [stderr] | [INFO] [stderr] 37 | let mut pa = [0, 1, 2, 3, 4]; [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: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.43s [INFO] running `"docker" "inspect" "06993e78fd83fb93db54b345669ecf04d10483df94a89ccf7eef3ff79da83f31"` [INFO] running `"docker" "rm" "-f" "06993e78fd83fb93db54b345669ecf04d10483df94a89ccf7eef3ff79da83f31"` [INFO] [stdout] 06993e78fd83fb93db54b345669ecf04d10483df94a89ccf7eef3ff79da83f31 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] dfbd746909e32dec6178a761a31175b261546787db5464b17cbca3ce43261685 [INFO] running `"docker" "start" "-a" "dfbd746909e32dec6178a761a31175b261546787db5464b17cbca3ce43261685"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling hello_world v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `xx` [INFO] [stderr] --> src/main.rs:6:10 [INFO] [stderr] | [INFO] [stderr] 6 | let (xx, y) = (1, 2); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_xx` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `yy` [INFO] [stderr] --> src/main.rs:8:9 [INFO] [stderr] | [INFO] [stderr] 8 | let yy: i32 = 5; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_yy` [INFO] [stderr] [INFO] [stderr] warning: variable `yyy` is assigned to, but never used [INFO] [stderr] --> src/main.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let mut yyy = 5; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_yyy` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `yyy` is never read [INFO] [stderr] --> src/main.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | yyy = 10; [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: `px` [INFO] [stderr] --> src/main.rs:19:9 [INFO] [stderr] | [INFO] [stderr] 19 | let px = true; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_px` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `py` [INFO] [stderr] --> src/main.rs:20:9 [INFO] [stderr] | [INFO] [stderr] 20 | let py:bool = false; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_py` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `pc` [INFO] [stderr] --> src/main.rs:21:9 [INFO] [stderr] | [INFO] [stderr] 21 | let pc:char = 'x'; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_pc` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `middle` [INFO] [stderr] --> src/main.rs:41:9 [INFO] [stderr] | [INFO] [stderr] 41 | let middle = &pa[1..4]; // [1,2,3] [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_middle` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ify` [INFO] [stderr] --> src/main.rs:52:9 [INFO] [stderr] | [INFO] [stderr] 52 | let ify = if x == 5 { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_ify` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ifyy` [INFO] [stderr] --> src/main.rs:57:9 [INFO] [stderr] | [INFO] [stderr] 57 | let ifyy = if x == 5 { 10 } else { 15 }; // y: i32 [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_ifyy` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:37:9 [INFO] [stderr] | [INFO] [stderr] 37 | let mut pa = [0, 1, 2, 3, 4]; [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: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.52s [INFO] running `"docker" "inspect" "dfbd746909e32dec6178a761a31175b261546787db5464b17cbca3ce43261685"` [INFO] running `"docker" "rm" "-f" "dfbd746909e32dec6178a761a31175b261546787db5464b17cbca3ce43261685"` [INFO] [stdout] dfbd746909e32dec6178a761a31175b261546787db5464b17cbca3ce43261685 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 7c6b2da3e6e1920ff2149eee94e64052103e4f2b7e6b78eebeb61b0cf7464d56 [INFO] running `"docker" "start" "-a" "7c6b2da3e6e1920ff2149eee94e64052103e4f2b7e6b78eebeb61b0cf7464d56"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stdout] [INFO] [stderr] warning: unused variable: `xx` [INFO] [stdout] running 0 tests [INFO] [stderr] --> src/main.rs:6:10 [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stderr] 6 | let (xx, y) = (1, 2); [INFO] [stdout] [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_xx` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `yy` [INFO] [stderr] --> src/main.rs:8:9 [INFO] [stderr] | [INFO] [stderr] 8 | let yy: i32 = 5; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_yy` [INFO] [stderr] [INFO] [stderr] warning: variable `yyy` is assigned to, but never used [INFO] [stderr] --> src/main.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let mut yyy = 5; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_yyy` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `yyy` is never read [INFO] [stderr] --> src/main.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | yyy = 10; [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: `px` [INFO] [stderr] --> src/main.rs:19:9 [INFO] [stderr] | [INFO] [stderr] 19 | let px = true; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_px` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `py` [INFO] [stderr] --> src/main.rs:20:9 [INFO] [stderr] | [INFO] [stderr] 20 | let py:bool = false; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_py` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `pc` [INFO] [stderr] --> src/main.rs:21:9 [INFO] [stderr] | [INFO] [stderr] 21 | let pc:char = 'x'; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_pc` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `middle` [INFO] [stderr] --> src/main.rs:41:9 [INFO] [stderr] | [INFO] [stderr] 41 | let middle = &pa[1..4]; // [1,2,3] [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_middle` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ify` [INFO] [stderr] --> src/main.rs:52:9 [INFO] [stderr] | [INFO] [stderr] 52 | let ify = if x == 5 { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_ify` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ifyy` [INFO] [stderr] --> src/main.rs:57:9 [INFO] [stderr] | [INFO] [stderr] 57 | let ifyy = if x == 5 { 10 } else { 15 }; // y: i32 [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_ifyy` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:37:9 [INFO] [stderr] | [INFO] [stderr] 37 | let mut pa = [0, 1, 2, 3, 4]; [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: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/hello_world-148e25378c059c52 [INFO] running `"docker" "inspect" "7c6b2da3e6e1920ff2149eee94e64052103e4f2b7e6b78eebeb61b0cf7464d56"` [INFO] running `"docker" "rm" "-f" "7c6b2da3e6e1920ff2149eee94e64052103e4f2b7e6b78eebeb61b0cf7464d56"` [INFO] [stdout] 7c6b2da3e6e1920ff2149eee94e64052103e4f2b7e6b78eebeb61b0cf7464d56