[INFO] cloning repository https://github.com/zveroboy/exercism-2022
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zveroboy/exercism-2022" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzveroboy%2Fexercism-2022", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzveroboy%2Fexercism-2022'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82956abb2c7b083086b562a4f3a31b99bc1ec515
[INFO] checking zveroboy/exercism-2022 against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzveroboy%2Fexercism-2022" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zveroboy/exercism-2022
[INFO] finished tweaking git repo https://github.com/zveroboy/exercism-2022
[INFO] tweaked toml for git repo https://github.com/zveroboy/exercism-2022 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zveroboy/exercism-2022 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zveroboy/exercism-2022 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af13be2908a1533aeab46a5b8fadb1e3d968e2015b31881043d04e5fb91a2068
[INFO] running `Command { std: "docker" "start" "-a" "af13be2908a1533aeab46a5b8fadb1e3d968e2015b31881043d04e5fb91a2068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af13be2908a1533aeab46a5b8fadb1e3d968e2015b31881043d04e5fb91a2068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af13be2908a1533aeab46a5b8fadb1e3d968e2015b31881043d04e5fb91a2068", kill_on_drop: false }`
[INFO] [stdout] af13be2908a1533aeab46a5b8fadb1e3d968e2015b31881043d04e5fb91a2068
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b309b8da153c118ee699a4b7bfa38105bc6d2b4bd1c21ca75f3b606cb18e665
[INFO] running `Command { std: "docker" "start" "-a" "7b309b8da153c118ee699a4b7bfa38105bc6d2b4bd1c21ca75f3b606cb18e665", kill_on_drop: false }`
[INFO] [stderr]     Checking time-core v0.1.0
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking time v0.3.20
[INFO] [stderr]     Checking exercism_2022 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `add-a-variant`
[INFO] [stdout]   --> src/exercises/semi_structured_logs.rs:72:7
[INFO] [stdout]    |
[INFO] [stdout] 72 | #[cfg(feature = "add-a-variant")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `grapheme`
[INFO] [stdout]    = help: consider adding `add-a-variant` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `add-a-variant`
[INFO] [stdout]   --> src/exercises/semi_structured_logs.rs:72:7
[INFO] [stdout]    |
[INFO] [stdout] 72 | #[cfg(feature = "add-a-variant")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `grapheme`
[INFO] [stdout]    = help: consider adding `add-a-variant` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/exercises/parallel_letter_frequency.rs:47:66
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn split<'a>(input: &'a [&'a str], len: usize) -> Chunks<'a, &str> {
[INFO] [stdout]    |                          --   --                             --  ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                          |    |                              |
[INFO] [stdout]    |                          |    the lifetime is named here     the same lifetime is named here
[INFO] [stdout]    |                          the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn split<'a>(input: &'a [&'a str], len: usize) -> Chunks<'a, &'a str> {
[INFO] [stdout]    |                                                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/exercises/parallel_letter_frequency.rs:183:66
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn split<'a>(input: &'a [&'a str], len: usize) -> Chunks<'a, &str> {
[INFO] [stdout]     |                          --   --                             --  ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                          |    |                              |
[INFO] [stdout]     |                          |    the lifetime is named here     the same lifetime is named here
[INFO] [stdout]     |                          the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn split<'a>(input: &'a [&'a str], len: usize) -> Chunks<'a, &'a str> {
[INFO] [stdout]     |                                                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/exercises/tournament.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn parse_line(line: &str) -> Option<MatchLine> {
[INFO] [stdout]    |                         ^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn parse_line(line: &str) -> Option<MatchLine<'_>> {
[INFO] [stdout]    |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `align_of`, `borrow::BorrowMut`, and `size_of`
[INFO] [stdout]  --> tests/parallel_letter_frequency.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{borrow::BorrowMut, collections::HashMap, mem::{size_of, align_of}, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^                              ^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S1` should have a snake case name
[INFO] [stdout]    --> tests/parallel_letter_frequency.rs:171:9
[INFO] [stdout]     |
[INFO] [stdout] 171 |     let S1 = String::from("bbb");
[INFO] [stdout]     |         ^^ help: convert the identifier to snake case (notice the capitalization): `s1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Rc1` should have a snake case name
[INFO] [stdout]    --> tests/parallel_letter_frequency.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |     let Rc1 = Rc::new(String::from("ccc"));
[INFO] [stdout]     |         ^^^ help: convert the identifier to snake case: `rc1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/exercises/parallel_letter_frequency.rs:47:66
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn split<'a>(input: &'a [&'a str], len: usize) -> Chunks<'a, &str> {
[INFO] [stdout]    |                          --   --                             --  ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                          |    |                              |
[INFO] [stdout]    |                          |    the lifetime is named here     the same lifetime is named here
[INFO] [stdout]    |                          the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn split<'a>(input: &'a [&'a str], len: usize) -> Chunks<'a, &'a str> {
[INFO] [stdout]    |                                                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/exercises/parallel_letter_frequency.rs:183:66
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn split<'a>(input: &'a [&'a str], len: usize) -> Chunks<'a, &str> {
[INFO] [stdout]     |                          --   --                             --  ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                          |    |                              |
[INFO] [stdout]     |                          |    the lifetime is named here     the same lifetime is named here
[INFO] [stdout]     |                          the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn split<'a>(input: &'a [&'a str], len: usize) -> Chunks<'a, &'a str> {
[INFO] [stdout]     |                                                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/exercises/tournament.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn parse_line(line: &str) -> Option<MatchLine> {
[INFO] [stdout]    |                         ^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn parse_line(line: &str) -> Option<MatchLine<'_>> {
[INFO] [stdout]    |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/benchmark.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercism_2022` (bench "benchmark") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7b309b8da153c118ee699a4b7bfa38105bc6d2b4bd1c21ca75f3b606cb18e665", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b309b8da153c118ee699a4b7bfa38105bc6d2b4bd1c21ca75f3b606cb18e665", kill_on_drop: false }`
[INFO] [stdout] 7b309b8da153c118ee699a4b7bfa38105bc6d2b4bd1c21ca75f3b606cb18e665
