[INFO] cloning repository https://github.com/cdgmachado0/exer-book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cdgmachado0/exer-book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdgmachado0%2Fexer-book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdgmachado0%2Fexer-book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1ee0e0dcc0cd5c87031c9ebb9d78e1a3e8ddb6fa
[INFO] checking cdgmachado0/exer-book against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdgmachado0%2Fexer-book" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cdgmachado0/exer-book 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/cdgmachado0/exer-book
[INFO] finished tweaking git repo https://github.com/cdgmachado0/exer-book
[INFO] tweaked toml for git repo https://github.com/cdgmachado0/exer-book written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cdgmachado0/exer-book 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 9d74c9c957c38eff8a69d9095f92ee8d21dc0e8e62e17a7a8cd6d88289a11523
[INFO] running `Command { std: "docker" "start" "-a" "9d74c9c957c38eff8a69d9095f92ee8d21dc0e8e62e17a7a8cd6d88289a11523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d74c9c957c38eff8a69d9095f92ee8d21dc0e8e62e17a7a8cd6d88289a11523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d74c9c957c38eff8a69d9095f92ee8d21dc0e8e62e17a7a8cd6d88289a11523", kill_on_drop: false }`
[INFO] [stdout] 9d74c9c957c38eff8a69d9095f92ee8d21dc0e8e62e17a7a8cd6d88289a11523
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8ddf5eac743d252d297644ba842d25ef956e2cbc286d9254a0b1cea187580ae5
[INFO] running `Command { std: "docker" "start" "-a" "8ddf5eac743d252d297644ba842d25ef956e2cbc286d9254a0b1cea187580ae5", kill_on_drop: false }`
[INFO] [stderr]     Checking exe-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/departments.rs:189:21
[INFO] [stdout]     |
[INFO] [stdout] 189 |     Display(String, String),
[INFO] [stdout]     |     -------         ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[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] 189 |     Display(String, ()),
[INFO] [stdout]     |                     ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/departments.rs:189:21
[INFO] [stdout]     |
[INFO] [stdout] 189 |     Display(String, String),
[INFO] [stdout]     |     -------         ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[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] 189 |     Display(String, ()),
[INFO] [stdout]     |                     ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "8ddf5eac743d252d297644ba842d25ef956e2cbc286d9254a0b1cea187580ae5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ddf5eac743d252d297644ba842d25ef956e2cbc286d9254a0b1cea187580ae5", kill_on_drop: false }`
[INFO] [stdout] 8ddf5eac743d252d297644ba842d25ef956e2cbc286d9254a0b1cea187580ae5
[INFO] checking cdgmachado0/exer-book against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdgmachado0%2Fexer-book" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cdgmachado0/exer-book 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/cdgmachado0/exer-book
[INFO] finished tweaking git repo https://github.com/cdgmachado0/exer-book
[INFO] tweaked toml for git repo https://github.com/cdgmachado0/exer-book written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cdgmachado0/exer-book 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 22b2019ca2aacb7091f9c2a51a0ab3aae56d700fd5c836db0ee4b13804ddea2d
[INFO] running `Command { std: "docker" "start" "-a" "22b2019ca2aacb7091f9c2a51a0ab3aae56d700fd5c836db0ee4b13804ddea2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22b2019ca2aacb7091f9c2a51a0ab3aae56d700fd5c836db0ee4b13804ddea2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22b2019ca2aacb7091f9c2a51a0ab3aae56d700fd5c836db0ee4b13804ddea2d", kill_on_drop: false }`
[INFO] [stdout] 22b2019ca2aacb7091f9c2a51a0ab3aae56d700fd5c836db0ee4b13804ddea2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 1722b650dbecfdfaec7483b86f2ca5bf72e6e262bce3ce8398c005d9946a4f3f
[INFO] running `Command { std: "docker" "start" "-a" "1722b650dbecfdfaec7483b86f2ca5bf72e6e262bce3ce8398c005d9946a4f3f", kill_on_drop: false }`
[INFO] [stderr]     Checking exe-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/latin.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 | /             match word.chars().position(|_| l == letter) {
[INFO] [stdout] 28 | |                 Some(_) => {
[INFO] [stdout] 29 | |                     exist = true;
[INFO] [stdout] 30 | |                     break;
[INFO] [stdout] 31 | |                 },
[INFO] [stdout] 32 | |                 None => continue,
[INFO] [stdout] 33 | |             };
[INFO] [stdout]    | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/latin.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 | /             match word.chars().position(|_| l == letter) {
[INFO] [stdout] 28 | |                 Some(_) => {
[INFO] [stdout] 29 | |                     exist = true;
[INFO] [stdout] 30 | |                     break;
[INFO] [stdout] 31 | |                 },
[INFO] [stdout] 32 | |                 None => continue,
[INFO] [stdout] 33 | |             };
[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] [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 `exe-8` (bin "exe-8" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `exe-8` (bin "exe-8") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1722b650dbecfdfaec7483b86f2ca5bf72e6e262bce3ce8398c005d9946a4f3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1722b650dbecfdfaec7483b86f2ca5bf72e6e262bce3ce8398c005d9946a4f3f", kill_on_drop: false }`
[INFO] [stdout] 1722b650dbecfdfaec7483b86f2ca5bf72e6e262bce3ce8398c005d9946a4f3f