[INFO] cloning repository https://github.com/novedevo/jab_code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/novedevo/jab_code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnovedevo%2Fjab_code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnovedevo%2Fjab_code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c42b5383b4816e438d748ef48f18d8c0d23352ff
[INFO] checking novedevo/jab_code against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnovedevo%2Fjab_code" "/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/novedevo/jab_code on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/novedevo/jab_code
[INFO] finished tweaking git repo https://github.com/novedevo/jab_code
[INFO] tweaked toml for git repo https://github.com/novedevo/jab_code written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/novedevo/jab_code 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded png v0.17.5
[INFO] [stderr]   Downloaded deflate v1.0.0
[INFO] [stderr]   Downloaded miniz_oxide v0.5.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a879f61588985deae0337d337a799db23d3e83d0f810467a46fb6c9f83e2f41c
[INFO] running `Command { std: "docker" "start" "-a" "a879f61588985deae0337d337a799db23d3e83d0f810467a46fb6c9f83e2f41c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a879f61588985deae0337d337a799db23d3e83d0f810467a46fb6c9f83e2f41c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a879f61588985deae0337d337a799db23d3e83d0f810467a46fb6c9f83e2f41c", kill_on_drop: false }`
[INFO] [stdout] a879f61588985deae0337d337a799db23d3e83d0f810467a46fb6c9f83e2f41c
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef9ffd84cf3ef8c6a8e1c7e1670c10e988379e89eb3237b0edc2cbb71b59e102
[INFO] running `Command { std: "docker" "start" "-a" "ef9ffd84cf3ef8c6a8e1c7e1670c10e988379e89eb3237b0edc2cbb71b59e102", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking jab_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `payload`, `palette_size`, `x`, `y`, and `ecc` are never read
[INFO] [stdout]  --> src/jab.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct JABSymbol<'a, const L: usize> {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 3 |     payload: &'a str,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 4 |     palette_size: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 5 |     x: usize,
[INFO] [stdout]   |     ^
[INFO] [stdout] 6 |     y: usize,
[INFO] [stdout]   |     ^
[INFO] [stdout] 7 |     ecc: ErrorCorrectionLevel,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `JABSymbol` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `metadata` is never used
[INFO] [stdout]   --> src/jab.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl<'a, const L: usize> JABSymbol<'a, L> {
[INFO] [stdout]    | ----------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn metadata(&self) -> Vec<bool> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `payload`, `palette_size`, `x`, `y`, and `ecc` are never read
[INFO] [stdout]  --> src/jab.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct JABSymbol<'a, const L: usize> {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 3 |     payload: &'a str,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 4 |     palette_size: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 5 |     x: usize,
[INFO] [stdout]   |     ^
[INFO] [stdout] 6 |     y: usize,
[INFO] [stdout]   |     ^
[INFO] [stdout] 7 |     ecc: ErrorCorrectionLevel,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `JABSymbol` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `metadata` is never used
[INFO] [stdout]   --> src/jab.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl<'a, const L: usize> JABSymbol<'a, L> {
[INFO] [stdout]    | ----------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn metadata(&self) -> Vec<bool> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "ef9ffd84cf3ef8c6a8e1c7e1670c10e988379e89eb3237b0edc2cbb71b59e102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef9ffd84cf3ef8c6a8e1c7e1670c10e988379e89eb3237b0edc2cbb71b59e102", kill_on_drop: false }`
[INFO] [stdout] ef9ffd84cf3ef8c6a8e1c7e1670c10e988379e89eb3237b0edc2cbb71b59e102
[INFO] checking novedevo/jab_code against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnovedevo%2Fjab_code" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/novedevo/jab_code on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/novedevo/jab_code
[INFO] finished tweaking git repo https://github.com/novedevo/jab_code
[INFO] tweaked toml for git repo https://github.com/novedevo/jab_code written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/novedevo/jab_code 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac072b358f28f8e4be20a6aaace0f30c177831a10cd9ed261821c0f8972cefdb
[INFO] running `Command { std: "docker" "start" "-a" "ac072b358f28f8e4be20a6aaace0f30c177831a10cd9ed261821c0f8972cefdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac072b358f28f8e4be20a6aaace0f30c177831a10cd9ed261821c0f8972cefdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac072b358f28f8e4be20a6aaace0f30c177831a10cd9ed261821c0f8972cefdb", kill_on_drop: false }`
[INFO] [stdout] ac072b358f28f8e4be20a6aaace0f30c177831a10cd9ed261821c0f8972cefdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ba560c73fc0c990680a8aac38b7929f7d37bc75c9aa04d46febdf69afe99212
[INFO] running `Command { std: "docker" "start" "-a" "3ba560c73fc0c990680a8aac38b7929f7d37bc75c9aa04d46febdf69afe99212", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/miniz_oxide-0.5.1/src/inflate/core.rs:1107:9
[INFO] [stdout]      |
[INFO] [stdout] 1107 | /         match state {
[INFO] [stdout] 1108 | |             Start => generate_state!(state, 'state_machine, {
[INFO] [stdout] 1109 | |                 l.bit_buf = 0;
[INFO] [stdout] 1110 | |                 l.num_bits = 0;
[INFO] [stdout] ...    |
[INFO] [stdout] 1639 | |             _ => break TINFLStatus::Failed,
[INFO] [stdout] 1640 | |         };
[INFO] [stdout]      | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `miniz_oxide` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3ba560c73fc0c990680a8aac38b7929f7d37bc75c9aa04d46febdf69afe99212", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ba560c73fc0c990680a8aac38b7929f7d37bc75c9aa04d46febdf69afe99212", kill_on_drop: false }`
[INFO] [stdout] 3ba560c73fc0c990680a8aac38b7929f7d37bc75c9aa04d46febdf69afe99212