[INFO] cloning repository https://github.com/rayz/learn-rust [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rayz/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frayz%2Flearn-rust"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frayz%2Flearn-rust'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 4f1d55c55d8e66fca1a2013200cf12eb99a48d55 [INFO] testing rayz/learn-rust against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frayz%2Flearn-rust" "/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/rayz/learn-rust on toolchain 28742a1146f10a4f09369baad027a464acb7a766 [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/rayz/learn-rust [INFO] finished tweaking git repo https://github.com/rayz/learn-rust [INFO] tweaked toml for git repo https://github.com/rayz/learn-rust written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/rayz/learn-rust already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "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=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"` [INFO] [stdout] 073e79312a810d7ea8c630e1a9537599c98e00ded51d02ada0e29039974449a4 [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" "073e79312a810d7ea8c630e1a9537599c98e00ded51d02ada0e29039974449a4"` [INFO] [stderr] Compiling learn-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `std::io` [INFO] [stderr] --> src/bin/err_from_main.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/bin/errs.rs:8:13 [INFO] [stderr] | [INFO] [stderr] 8 | Err(e) => println!("Error reading username from file!"), [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/bin/err_from_main.rs:5:9 [INFO] [stderr] | [INFO] [stderr] 5 | let mut file = File::open("foo.txt")?; [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/err_from_main.rs:5:9 [INFO] [stderr] | [INFO] [stderr] 5 | let mut file = File::open("foo.txt")?; [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: unused variable: `y` [INFO] [stderr] --> src/bin/vec.rs:18:13 [INFO] [stderr] | [INFO] [stderr] 18 | let y = i; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_iter_mut` [INFO] [stderr] --> src/bin/vec.rs:7:4 [INFO] [stderr] | [INFO] [stderr] 7 | fn test_iter_mut() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_fold` [INFO] [stderr] --> src/bin/vec.rs:15:4 [INFO] [stderr] | [INFO] [stderr] 15 | fn test_fold() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.79s [INFO] running `"docker" "inspect" "073e79312a810d7ea8c630e1a9537599c98e00ded51d02ada0e29039974449a4"` [INFO] running `"docker" "rm" "-f" "073e79312a810d7ea8c630e1a9537599c98e00ded51d02ada0e29039974449a4"` [INFO] [stdout] 073e79312a810d7ea8c630e1a9537599c98e00ded51d02ada0e29039974449a4 [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=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "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] ab0e020c7c93115458f06ebaa8f3f014a417c2cfe7e31d6fb367926c54ac5217 [INFO] running `"docker" "start" "-a" "ab0e020c7c93115458f06ebaa8f3f014a417c2cfe7e31d6fb367926c54ac5217"` [INFO] [stderr] Compiling learn-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/bin/errs.rs:8:13 [INFO] [stderr] | [INFO] [stderr] 8 | Err(e) => println!("Error reading username from file!"), [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io` [INFO] [stderr] --> src/bin/err_from_main.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/bin/err_from_main.rs:5:9 [INFO] [stderr] | [INFO] [stderr] 5 | let mut file = File::open("foo.txt")?; [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/err_from_main.rs:5:9 [INFO] [stderr] | [INFO] [stderr] 5 | let mut file = File::open("foo.txt")?; [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: unused variable: `y` [INFO] [stderr] --> src/bin/vec.rs:18:13 [INFO] [stderr] | [INFO] [stderr] 18 | let y = i; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_iter_mut` [INFO] [stderr] --> src/bin/vec.rs:7:4 [INFO] [stderr] | [INFO] [stderr] 7 | fn test_iter_mut() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_fold` [INFO] [stderr] --> src/bin/vec.rs:15:4 [INFO] [stderr] | [INFO] [stderr] 15 | fn test_fold() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 4.86s [INFO] running `"docker" "inspect" "ab0e020c7c93115458f06ebaa8f3f014a417c2cfe7e31d6fb367926c54ac5217"` [INFO] running `"docker" "rm" "-f" "ab0e020c7c93115458f06ebaa8f3f014a417c2cfe7e31d6fb367926c54ac5217"` [INFO] [stdout] ab0e020c7c93115458f06ebaa8f3f014a417c2cfe7e31d6fb367926c54ac5217 [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=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "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] 5c94e584508e256aeab5a67d0bd54d008b4c0cd34d8f838369607c8a0e4cf264 [INFO] running `"docker" "start" "-a" "5c94e584508e256aeab5a67d0bd54d008b4c0cd34d8f838369607c8a0e4cf264"` [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/bin/vec.rs:18:13 [INFO] [stderr] | [INFO] [stderr] 18 | let y = i; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_iter_mut` [INFO] [stderr] --> src/bin/vec.rs:7:4 [INFO] [stderr] | [INFO] [stderr] 7 | fn test_iter_mut() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_fold` [INFO] [stderr] --> src/bin/vec.rs:15:4 [INFO] [stderr] | [INFO] [stderr] 15 | fn test_fold() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/bin/errs.rs:8:13 [INFO] [stderr] | [INFO] [stderr] 8 | Err(e) => println!("Error reading username from file!"), [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io` [INFO] [stderr] --> src/bin/err_from_main.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/bin/err_from_main.rs:5:9 [INFO] [stderr] | [INFO] [stderr] 5 | let mut file = File::open("foo.txt")?; [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/err_from_main.rs:5:9 [INFO] [stderr] | [INFO] [stderr] 5 | let mut file = File::open("foo.txt")?; [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: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/closures-77dc77897da90760 [INFO] [stderr] Running /opt/rustwide/target/debug/deps/dbg-ab64c6766da61ea0 [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] [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] [stderr] Running /opt/rustwide/target/debug/deps/emoji-c2dbd682e8c98ecb [INFO] [stderr] Running /opt/rustwide/target/debug/deps/err_from_main-b5ce04f324a006aa [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] [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] [stderr] Running /opt/rustwide/target/debug/deps/errs-0f9dea6bd0b91e28 [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] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/generics-53ff80b3c2e7f998 [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] [stderr] Running /opt/rustwide/target/debug/deps/matches-a089cec1db6ab341 [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] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/own_ref-4ccf11e0a514e293 [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] [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] [stderr] Running /opt/rustwide/target/debug/deps/scopes-c1ffa2b79259fcde [INFO] [stderr] Running /opt/rustwide/target/debug/deps/string_to_vec-60fb7bb96562c0c2 [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] [stderr] Running /opt/rustwide/target/debug/deps/temp_conversion-92a647274c0fd540 [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] [stderr] Running /opt/rustwide/target/debug/deps/vec-2e85d5116ff6705b [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" "5c94e584508e256aeab5a67d0bd54d008b4c0cd34d8f838369607c8a0e4cf264"` [INFO] running `"docker" "rm" "-f" "5c94e584508e256aeab5a67d0bd54d008b4c0cd34d8f838369607c8a0e4cf264"` [INFO] [stdout] 5c94e584508e256aeab5a67d0bd54d008b4c0cd34d8f838369607c8a0e4cf264