[INFO] cloning repository https://github.com/fprasx/wordle-analysis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fprasx/wordle-analysis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Fwordle-analysis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Fwordle-analysis'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/push-to-checkout.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Fwordle-analysis/hooks/push-to-checkout.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/fprasx/wordle-analysis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fprasx/wordle-analysis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Fwordle-analysis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Fwordle-analysis'...
[INFO] [stderr] error: failed to write new configuration file /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Fwordle-analysis/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'
[WARN] Retrying crate fetch in 3 seconds (attempt 2)
[INFO] cloning repository https://github.com/fprasx/wordle-analysis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fprasx/wordle-analysis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Fwordle-analysis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Fwordle-analysis'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5943f1a945d0564fa75bd11f86849a3e9ea50ba
[INFO] testing fprasx/wordle-analysis against master#ebf0cf75d368c035f4c7e7246d203bd469ee4a51 for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Fwordle-analysis" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fprasx/wordle-analysis on toolchain ebf0cf75d368c035f4c7e7246d203bd469ee4a51
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fprasx/wordle-analysis
[INFO] finished tweaking git repo https://github.com/fprasx/wordle-analysis
[INFO] tweaked toml for git repo https://github.com/fprasx/wordle-analysis written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/fprasx/wordle-analysis 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" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20cb2769518a521009cff5590bd3c5404e27ece06770f319df4419e50c5bd755
[INFO] running `Command { std: "docker" "start" "-a" "20cb2769518a521009cff5590bd3c5404e27ece06770f319df4419e50c5bd755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20cb2769518a521009cff5590bd3c5404e27ece06770f319df4419e50c5bd755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20cb2769518a521009cff5590bd3c5404e27ece06770f319df4419e50c5bd755", kill_on_drop: false }`
[INFO] [stdout] 20cb2769518a521009cff5590bd3c5404e27ece06770f319df4419e50c5bd755
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a08e4cccab037f12e0ea242b7ddb81942be7cce1a92a2d66f7aa14ccc93013d0
[INFO] running `Command { std: "docker" "start" "-a" "a08e4cccab037f12e0ea242b7ddb81942be7cce1a92a2d66f7aa14ccc93013d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling wordle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/freq_ranking/utilities.rs:24:22
[INFO] [stdout]    |
[INFO] [stdout] 24 |             for c in word.chars().nth(index) {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 24 -             for c in word.chars().nth(index) {
[INFO] [stdout] 24 +             while let Some(c) = word.chars().nth(index) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 24 -             for c in word.chars().nth(index) {
[INFO] [stdout] 24 +             if let Some(c) = word.chars().nth(index) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "a08e4cccab037f12e0ea242b7ddb81942be7cce1a92a2d66f7aa14ccc93013d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a08e4cccab037f12e0ea242b7ddb81942be7cce1a92a2d66f7aa14ccc93013d0", kill_on_drop: false }`
[INFO] [stdout] a08e4cccab037f12e0ea242b7ddb81942be7cce1a92a2d66f7aa14ccc93013d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9eb0512723823dc82510423a07438dcd115a9734ae93a92aada84348431dc052
[INFO] running `Command { std: "docker" "start" "-a" "9eb0512723823dc82510423a07438dcd115a9734ae93a92aada84348431dc052", kill_on_drop: false }`
[INFO] [stderr]    Compiling wordle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/freq_ranking/utilities.rs:24:22
[INFO] [stdout]    |
[INFO] [stdout] 24 |             for c in word.chars().nth(index) {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 24 -             for c in word.chars().nth(index) {
[INFO] [stdout] 24 +             while let Some(c) = word.chars().nth(index) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 24 -             for c in word.chars().nth(index) {
[INFO] [stdout] 24 +             if let Some(c) = word.chars().nth(index) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/freq_ranking/utilities.rs:24:22
[INFO] [stdout]    |
[INFO] [stdout] 24 |             for c in word.chars().nth(index) {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 24 -             for c in word.chars().nth(index) {
[INFO] [stdout] 24 +             while let Some(c) = word.chars().nth(index) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 24 -             for c in word.chars().nth(index) {
[INFO] [stdout] 24 +             if let Some(c) = word.chars().nth(index) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "9eb0512723823dc82510423a07438dcd115a9734ae93a92aada84348431dc052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eb0512723823dc82510423a07438dcd115a9734ae93a92aada84348431dc052", kill_on_drop: false }`
[INFO] [stdout] 9eb0512723823dc82510423a07438dcd115a9734ae93a92aada84348431dc052
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6950acc09120b239d9c6c65c04be8f5ed7a2ced67e5185210e348d80667c53f7
[INFO] running `Command { std: "docker" "start" "-a" "6950acc09120b239d9c6c65c04be8f5ed7a2ced67e5185210e348d80667c53f7", kill_on_drop: false }`
[INFO] [stderr] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stderr]   --> src/freq_ranking/utilities.rs:24:22
[INFO] [stderr]    |
[INFO] [stderr] 24 |             for c in word.chars().nth(index) {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]    |
[INFO] [stderr] 24 -             for c in word.chars().nth(index) {
[INFO] [stderr] 24 +             while let Some(c) = word.chars().nth(index) {
[INFO] [stderr]    |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]    |
[INFO] [stderr] 24 -             for c in word.chars().nth(index) {
[INFO] [stderr] 24 +             if let Some(c) = word.chars().nth(index) {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `wordle` (lib) generated 1 warning
[INFO] [stderr] warning: `wordle` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wordle-fb3275da5571ffc6)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test bench::contains::bench::naive_contains ... ok
[INFO] [stdout] test bench::contains::bench::naive_doesnt_contain ... ok
[INFO] [stdout] test bench::contains::bench::hash_contains ... ok
[INFO] [stdout] test bench::contains::bench::hash_doesnt_contain ... ok
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/wordle-000f13c7a80bbcd5)
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests wordle
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6950acc09120b239d9c6c65c04be8f5ed7a2ced67e5185210e348d80667c53f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6950acc09120b239d9c6c65c04be8f5ed7a2ced67e5185210e348d80667c53f7", kill_on_drop: false }`
[INFO] [stdout] 6950acc09120b239d9c6c65c04be8f5ed7a2ced67e5185210e348d80667c53f7