[INFO] cloning repository https://github.com/pelyams/test_densify_no_brainer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pelyams/test_densify_no_brainer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpelyams%2Ftest_densify_no_brainer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpelyams%2Ftest_densify_no_brainer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33dbef82f9edf30fbdaad3e96ca9c41619319605
[INFO] checking pelyams/test_densify_no_brainer against try#0e1f5e292c80a395d02835ac656d141e992caf89 for pr-145605
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpelyams%2Ftest_densify_no_brainer" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pelyams/test_densify_no_brainer
[INFO] finished tweaking git repo https://github.com/pelyams/test_densify_no_brainer
[INFO] tweaked toml for git repo https://github.com/pelyams/test_densify_no_brainer written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pelyams/test_densify_no_brainer on toolchain 0e1f5e292c80a395d02835ac656d141e992caf89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0e1f5e292c80a395d02835ac656d141e992caf89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pelyams/test_densify_no_brainer 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" "+0e1f5e292c80a395d02835ac656d141e992caf89" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+0e1f5e292c80a395d02835ac656d141e992caf89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20d40df6dc4de011f09340b7dae12d73ba83bc9f374a5e27c354762f9a6edb31
[INFO] running `Command { std: "docker" "start" "-a" "20d40df6dc4de011f09340b7dae12d73ba83bc9f374a5e27c354762f9a6edb31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20d40df6dc4de011f09340b7dae12d73ba83bc9f374a5e27c354762f9a6edb31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20d40df6dc4de011f09340b7dae12d73ba83bc9f374a5e27c354762f9a6edb31", kill_on_drop: false }`
[INFO] [stdout] 20d40df6dc4de011f09340b7dae12d73ba83bc9f374a5e27c354762f9a6edb31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+0e1f5e292c80a395d02835ac656d141e992caf89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43a422ce1419703ebcb60d4e6b8a222649d9b2aa7dc824df12a5b932262e33f1
[INFO] running `Command { std: "docker" "start" "-a" "43a422ce1419703ebcb60d4e6b8a222649d9b2aa7dc824df12a5b932262e33f1", kill_on_drop: false }`
[INFO] [stderr]     Checking test_densify_no_brainer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/bit_representer.rs:126:16
[INFO] [stdout]     |
[INFO] [stdout] 126 |     ParseError(std::num::ParseIntError),
[INFO] [stdout]     |     ---------- ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `BitsDecodeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 126 -     ParseError(std::num::ParseIntError),
[INFO] [stdout] 126 +     ParseError(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/bit_representer.rs:128:20
[INFO] [stdout]     |
[INFO] [stdout] 128 |     UnexpectedChar(char),
[INFO] [stdout]     |     -------------- ^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `BitsDecodeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 128 -     UnexpectedChar(char),
[INFO] [stdout] 128 +     UnexpectedChar(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `revert_to_original_vec` is never used
[INFO] [stdout]  --> src/densifyer.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub(crate) fn revert_to_original_vec(s: &str) -> Result<Vec<u16>, DensifyerError> {
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/densifyer.rs:24:36
[INFO] [stdout]    |
[INFO] [stdout] 24 |     BitRepresentationDecodingError(BitsDecodeError),
[INFO] [stdout]    |     ------------------------------ ^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DensifyerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 24 -     BitRepresentationDecodingError(BitsDecodeError),
[INFO] [stdout] 24 +     BitRepresentationDecodingError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/bit_representer.rs:126:16
[INFO] [stdout]     |
[INFO] [stdout] 126 |     ParseError(std::num::ParseIntError),
[INFO] [stdout]     |     ---------- ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `BitsDecodeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 126 -     ParseError(std::num::ParseIntError),
[INFO] [stdout] 126 +     ParseError(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/bit_representer.rs:128:20
[INFO] [stdout]     |
[INFO] [stdout] 128 |     UnexpectedChar(char),
[INFO] [stdout]     |     -------------- ^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `BitsDecodeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 128 -     UnexpectedChar(char),
[INFO] [stdout] 128 +     UnexpectedChar(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/densifyer.rs:24:36
[INFO] [stdout]    |
[INFO] [stdout] 24 |     BitRepresentationDecodingError(BitsDecodeError),
[INFO] [stdout]    |     ------------------------------ ^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DensifyerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 24 -     BitRepresentationDecodingError(BitsDecodeError),
[INFO] [stdout] 24 +     BitRepresentationDecodingError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "43a422ce1419703ebcb60d4e6b8a222649d9b2aa7dc824df12a5b932262e33f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43a422ce1419703ebcb60d4e6b8a222649d9b2aa7dc824df12a5b932262e33f1", kill_on_drop: false }`
[INFO] [stdout] 43a422ce1419703ebcb60d4e6b8a222649d9b2aa7dc824df12a5b932262e33f1