[INFO] cloning repository https://github.com/psatomas/option_and_result_enums
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/psatomas/option_and_result_enums" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Foption_and_result_enums", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Foption_and_result_enums'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75571c0538a5fbd3e7646ee96701d09e07da4589
[INFO] fixing psatomas/option_and_result_enums against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Foption_and_result_enums" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/psatomas/option_and_result_enums
[INFO] finished tweaking git repo https://github.com/psatomas/option_and_result_enums
[INFO] tweaked toml for git repo https://github.com/psatomas/option_and_result_enums written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/psatomas/option_and_result_enums on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/psatomas/option_and_result_enums 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7bcf86b653d875cdce2f21f4d027d15411d8cc548c412c5d9079d3e72530f9b7
[INFO] running `Command { std: "docker" "start" "7bcf86b653d875cdce2f21f4d027d15411d8cc548c412c5d9079d3e72530f9b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7bcf86b653d875cdce2f21f4d027d15411d8cc548c412c5d9079d3e72530f9b7" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bcf86b653d875cdce2f21f4d027d15411d8cc548c412c5d9079d3e72530f9b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7bcf86b653d875cdce2f21f4d027d15411d8cc548c412c5d9079d3e72530f9b7" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]     Checking option_and_result_enums v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let a = Option::Some(5);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let b = Option::Some("hello");
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let c = Option::Some(true);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let a: Option<i32> = Option::Some(5);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let a = Option::<i16>::Some(5);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let d: Option<&str> = Option::None;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid character '(' in crate name: `real_example_of_result_enum_(the_parse_method_on_a_string)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid character ')' in crate name: `real_example_of_result_enum_(the_parse_method_on_a_string)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `option_and_result_enums` (bin "real_example_of_result_enum_(the_parse_method_on_a_string)") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let a = Option::Some(5);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let b = Option::Some("hello");
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let c = Option::Some(true);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let a: Option<i32> = Option::Some(5);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let a = Option::<i16>::Some(5);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]  --> src/bin/the_option_enum.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let d: Option<&str> = Option::None;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `unwrap` is never used
[INFO] [stdout]  --> src/bin/building_option_from_scratch.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl MyOption {
[INFO] [stdout]   | ------------- method in this implementation
[INFO] [stdout] 8 |     fn unwrap(self) -> i32 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `content`
[INFO] [stdout]   --> src/bin/nuances_of_unwrap_method_on_result.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let content = match my_result {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_content`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7bcf86b653d875cdce2f21f4d027d15411d8cc548c412c5d9079d3e72530f9b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bcf86b653d875cdce2f21f4d027d15411d8cc548c412c5d9079d3e72530f9b7", kill_on_drop: false }`
[INFO] [stdout] 7bcf86b653d875cdce2f21f4d027d15411d8cc548c412c5d9079d3e72530f9b7
