[INFO] updating cached repository https://github.com/sanevillain/rust_intro [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] fd8a87eac661a6748b7abf2a65346421e1ce013a [INFO] testing sanevillain/rust_intro against beta-2020-06-03 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsanevillain%2Frust_intro" "/workspace/builds/worker-0/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sanevillain/rust_intro on toolchain beta-2020-06-03 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/sanevillain/rust_intro [INFO] finished tweaking git repo https://github.com/sanevillain/rust_intro [INFO] tweaked toml for git repo https://github.com/sanevillain/rust_intro written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/sanevillain/rust_intro already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2020-06-03" "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] 357365ab9377b74fb11a1271fe24314fcfe409994ecd9b01ec1404db4630161f [INFO] running `"docker" "start" "-a" "357365ab9377b74fb11a1271fe24314fcfe409994ecd9b01ec1404db4630161f"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling play_ground v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:3:9 [INFO] [stderr] | [INFO] [stderr] 3 | let x = 5; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `y` is assigned to, but never used [INFO] [stderr] --> src/main.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let mut y = 10; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_y` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `y` is never read [INFO] [stderr] --> src/main.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | y += 1; [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: `a` [INFO] [stderr] --> src/main.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 15 | let a = 1 + 21; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/main.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let s = 30 - 20; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `m` [INFO] [stderr] --> src/main.rs:17:9 [INFO] [stderr] | [INFO] [stderr] 17 | let m = 5 * 10; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `d` [INFO] [stderr] --> src/main.rs:18:9 [INFO] [stderr] | [INFO] [stderr] 18 | let d = 4 / 6; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r` [INFO] [stderr] --> src/main.rs:19:9 [INFO] [stderr] | [INFO] [stderr] 19 | let r = 49 % 2; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/main.rs:22:9 [INFO] [stderr] | [INFO] [stderr] 22 | let t: bool = true; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/main.rs:23:9 [INFO] [stderr] | [INFO] [stderr] 23 | let f: bool = false; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:26:9 [INFO] [stderr] | [INFO] [stderr] 26 | let c: char = 'z'; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:32:10 [INFO] [stderr] | [INFO] [stderr] 32 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:32:16 [INFO] [stderr] | [INFO] [stderr] 32 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x1` [INFO] [stderr] --> src/main.rs:35:16 [INFO] [stderr] | [INFO] [stderr] 35 | let (_, _, x1) = t; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_x1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:41:9 [INFO] [stderr] | [INFO] [stderr] 41 | let a = [1, 2, 3, 4, 5, 6, 7, 8]; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: 16 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.54s [INFO] running `"docker" "inspect" "357365ab9377b74fb11a1271fe24314fcfe409994ecd9b01ec1404db4630161f"` [INFO] running `"docker" "rm" "-f" "357365ab9377b74fb11a1271fe24314fcfe409994ecd9b01ec1404db4630161f"` [INFO] [stdout] 357365ab9377b74fb11a1271fe24314fcfe409994ecd9b01ec1404db4630161f [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2020-06-03" "test" "--frozen" "--no-run"` [INFO] [stdout] 0d5ce5ac1c2e2c66862fcf28b234435de1b43c39f6f74c112bedb67617dba33b [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "0d5ce5ac1c2e2c66862fcf28b234435de1b43c39f6f74c112bedb67617dba33b"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling play_ground v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:3:9 [INFO] [stderr] | [INFO] [stderr] 3 | let x = 5; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `y` is assigned to, but never used [INFO] [stderr] --> src/main.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let mut y = 10; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_y` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `y` is never read [INFO] [stderr] --> src/main.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | y += 1; [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: `a` [INFO] [stderr] --> src/main.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 15 | let a = 1 + 21; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/main.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let s = 30 - 20; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `m` [INFO] [stderr] --> src/main.rs:17:9 [INFO] [stderr] | [INFO] [stderr] 17 | let m = 5 * 10; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `d` [INFO] [stderr] --> src/main.rs:18:9 [INFO] [stderr] | [INFO] [stderr] 18 | let d = 4 / 6; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r` [INFO] [stderr] --> src/main.rs:19:9 [INFO] [stderr] | [INFO] [stderr] 19 | let r = 49 % 2; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/main.rs:22:9 [INFO] [stderr] | [INFO] [stderr] 22 | let t: bool = true; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/main.rs:23:9 [INFO] [stderr] | [INFO] [stderr] 23 | let f: bool = false; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:26:9 [INFO] [stderr] | [INFO] [stderr] 26 | let c: char = 'z'; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:32:10 [INFO] [stderr] | [INFO] [stderr] 32 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:32:16 [INFO] [stderr] | [INFO] [stderr] 32 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x1` [INFO] [stderr] --> src/main.rs:35:16 [INFO] [stderr] | [INFO] [stderr] 35 | let (_, _, x1) = t; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_x1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:41:9 [INFO] [stderr] | [INFO] [stderr] 41 | let a = [1, 2, 3, 4, 5, 6, 7, 8]; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: 16 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 16.00s [INFO] running `"docker" "inspect" "0d5ce5ac1c2e2c66862fcf28b234435de1b43c39f6f74c112bedb67617dba33b"` [INFO] running `"docker" "rm" "-f" "0d5ce5ac1c2e2c66862fcf28b234435de1b43c39f6f74c112bedb67617dba33b"` [INFO] [stdout] 0d5ce5ac1c2e2c66862fcf28b234435de1b43c39f6f74c112bedb67617dba33b [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2020-06-03" "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] 335fdfa23e18392a4ffef4d42e077b964dedd3696eac3ec01d8b9681160c4696 [INFO] running `"docker" "start" "-a" "335fdfa23e18392a4ffef4d42e077b964dedd3696eac3ec01d8b9681160c4696"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:3:9 [INFO] [stderr] | [INFO] [stderr] 3 | let x = 5; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `y` is assigned to, but never used [INFO] [stderr] --> src/main.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let mut y = 10; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_y` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `y` is never read [INFO] [stderr] --> src/main.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | y += 1; [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: `a` [INFO] [stderr] --> src/main.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 15 | let a = 1 + 21; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/main.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let s = 30 - 20; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `m` [INFO] [stderr] --> src/main.rs:17:9 [INFO] [stderr] | [INFO] [stderr] 17 | let m = 5 * 10; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `d` [INFO] [stderr] --> src/main.rs:18:9 [INFO] [stderr] | [INFO] [stderr] 18 | let d = 4 / 6; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r` [INFO] [stderr] --> src/main.rs:19:9 [INFO] [stderr] | [INFO] [stderr] 19 | let r = 49 % 2; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/main.rs:22:9 [INFO] [stderr] | [INFO] [stderr] 22 | let t: bool = true; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/main.rs:23:9 [INFO] [stderr] | [INFO] [stderr] 23 | let f: bool = false; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:26:9 [INFO] [stderr] | [INFO] [stderr] 26 | let c: char = 'z'; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:32:10 [INFO] [stderr] | [INFO] [stderr] 32 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:32:16 [INFO] [stderr] | [INFO] [stderr] 32 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x1` [INFO] [stderr] --> src/main.rs:35:16 [INFO] [stderr] | [INFO] [stderr] 35 | let (_, _, x1) = t; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_x1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:41:9 [INFO] [stderr] | [INFO] [stderr] 41 | let a = [1, 2, 3, 4, 5, 6, 7, 8]; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: 16 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/play_ground-99dcd45ca7231cd0 [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" "335fdfa23e18392a4ffef4d42e077b964dedd3696eac3ec01d8b9681160c4696"` [INFO] running `"docker" "rm" "-f" "335fdfa23e18392a4ffef4d42e077b964dedd3696eac3ec01d8b9681160c4696"` [INFO] [stdout] 335fdfa23e18392a4ffef4d42e077b964dedd3696eac3ec01d8b9681160c4696