[INFO] cloning repository https://github.com/bmollot/letter-c
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bmollot/letter-c" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmollot%2Fletter-c", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmollot%2Fletter-c'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] edb13f1cf18788bcee1810a9cc2b8a7d0d49db84
[INFO] testing bmollot/letter-c against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmollot%2Fletter-c" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bmollot/letter-c on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bmollot/letter-c
[INFO] finished tweaking git repo https://github.com/bmollot/letter-c
[INFO] tweaked toml for git repo https://github.com/bmollot/letter-c written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/bmollot/letter-c already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abf5a4de48a2a4c1865ec15a12aed17b4c40265a0a7558be106a5cff056838a3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "abf5a4de48a2a4c1865ec15a12aed17b4c40265a0a7558be106a5cff056838a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abf5a4de48a2a4c1865ec15a12aed17b4c40265a0a7558be106a5cff056838a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abf5a4de48a2a4c1865ec15a12aed17b4c40265a0a7558be106a5cff056838a3", kill_on_drop: false }`
[INFO] [stdout] abf5a4de48a2a4c1865ec15a12aed17b4c40265a0a7558be106a5cff056838a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60ea49eb3288e9a33aaa7fc92eeb53b4847a98bf19386073c5fc859f51454971
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "60ea49eb3288e9a33aaa7fc92eeb53b4847a98bf19386073c5fc859f51454971", kill_on_drop: false }`
[INFO] [stderr]    Compiling letter-c v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `QuarterDot`
[INFO] [stdout]   --> src/lib.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     QuarterDot,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MEGALOVANIA_RAW`
[INFO] [stdout]    --> src/lib.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 245 | /     const MEGALOVANIA_RAW: &'static str = "5|--d---------------d-------|
[INFO] [stdout] 246 | | 4|dd--a--G-g-f-dfgcc--a--G-g|
[INFO] [stdout] 247 | |
[INFO] [stdout] 248 | | 5|--------d---------------d-|
[INFO] [stdout] ...   |
[INFO] [stdout] 351 | | 5|------------d-------------|
[INFO] [stdout] 352 | | 4|-G-g-f-dfgcc--a--G-g-f-dfg|";
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "60ea49eb3288e9a33aaa7fc92eeb53b4847a98bf19386073c5fc859f51454971", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60ea49eb3288e9a33aaa7fc92eeb53b4847a98bf19386073c5fc859f51454971", kill_on_drop: false }`
[INFO] [stdout] 60ea49eb3288e9a33aaa7fc92eeb53b4847a98bf19386073c5fc859f51454971
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0526ae9602c26596b43deba302cbf37c76bf186e9cadf292b8ff1b9462ef7369
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0526ae9602c26596b43deba302cbf37c76bf186e9cadf292b8ff1b9462ef7369", kill_on_drop: false }`
[INFO] [stdout] warning: variant is never constructed: `QuarterDot`
[INFO] [stdout]   --> src/lib.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     QuarterDot,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling letter-c v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `MEGALOVANIA_RAW`
[INFO] [stdout]    --> src/lib.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 245 | /     const MEGALOVANIA_RAW: &'static str = "5|--d---------------d-------|
[INFO] [stdout] 246 | | 4|dd--a--G-g-f-dfgcc--a--G-g|
[INFO] [stdout] 247 | |
[INFO] [stdout] 248 | | 5|--------d---------------d-|
[INFO] [stdout] ...   |
[INFO] [stdout] 351 | | 5|------------d-------------|
[INFO] [stdout] 352 | | 4|-G-g-f-dfgcc--a--G-g-f-dfg|";
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `QuarterDot`
[INFO] [stdout]   --> src/lib.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     QuarterDot,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "0526ae9602c26596b43deba302cbf37c76bf186e9cadf292b8ff1b9462ef7369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0526ae9602c26596b43deba302cbf37c76bf186e9cadf292b8ff1b9462ef7369", kill_on_drop: false }`
[INFO] [stdout] 0526ae9602c26596b43deba302cbf37c76bf186e9cadf292b8ff1b9462ef7369
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 05ec009de46a0ddbefc11e471f7610a4127d5ebab984694e1a5e029977ac3b42
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "05ec009de46a0ddbefc11e471f7610a4127d5ebab984694e1a5e029977ac3b42", kill_on_drop: false }`
[INFO] [stderr] warning: variant is never constructed: `QuarterDot`
[INFO] [stderr]   --> src/lib.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     QuarterDot,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `QuarterDot`
[INFO] [stderr]   --> src/lib.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     QuarterDot,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `MEGALOVANIA_RAW`
[INFO] [stderr]    --> src/lib.rs:245:5
[INFO] [stderr]     |
[INFO] [stderr] 245 | /     const MEGALOVANIA_RAW: &'static str = "5|--d---------------d-------|
[INFO] [stderr] 246 | | 4|dd--a--G-g-f-dfgcc--a--G-g|
[INFO] [stderr] 247 | |
[INFO] [stderr] 248 | | 5|--------d---------------d-|
[INFO] [stderr] ...   |
[INFO] [stderr] 351 | | 5|------------d-------------|
[INFO] [stderr] 352 | | 4|-G-g-f-dfgcc--a--G-g-f-dfg|";
[INFO] [stderr]     | |_______________________________^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/letter_c-4c4c94b95121c870
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::test_megalovania ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/letter_c-3813363c942eea1e
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests letter_c
[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] running `Command { std: "docker" "inspect" "05ec009de46a0ddbefc11e471f7610a4127d5ebab984694e1a5e029977ac3b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05ec009de46a0ddbefc11e471f7610a4127d5ebab984694e1a5e029977ac3b42", kill_on_drop: false }`
[INFO] [stdout] 05ec009de46a0ddbefc11e471f7610a4127d5ebab984694e1a5e029977ac3b42