[INFO] fetching crate todoster 0.1.0...
[INFO] checking todoster-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate todoster 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate todoster 0.1.0 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 crates.io crate todoster 0.1.0
[INFO] finished tweaking crates.io crate todoster 0.1.0
[INFO] tweaked toml for crates.io crate todoster 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate todoster 0.1.0 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 regex v1.9.4
[INFO] [stderr]   Downloaded regex-automata v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 7990871d55dcb8c67d10a87bc9ff536dd85422bad70b097b72cb13fc1d4a598c
[INFO] running `Command { std: "docker" "start" "-a" "7990871d55dcb8c67d10a87bc9ff536dd85422bad70b097b72cb13fc1d4a598c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7990871d55dcb8c67d10a87bc9ff536dd85422bad70b097b72cb13fc1d4a598c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7990871d55dcb8c67d10a87bc9ff536dd85422bad70b097b72cb13fc1d4a598c", kill_on_drop: false }`
[INFO] [stdout] 7990871d55dcb8c67d10a87bc9ff536dd85422bad70b097b72cb13fc1d4a598c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2def9e48cd7e2f5811418ee578fb5031831e203cbab8be721e6e52e2b77d2abd
[INFO] running `Command { std: "docker" "start" "-a" "2def9e48cd7e2f5811418ee578fb5031831e203cbab8be721e6e52e2b77d2abd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking termion v2.0.1
[INFO] [stderr]     Checking regex-automata v0.3.7
[INFO] [stderr]     Checking regex v1.9.4
[INFO] [stderr]     Checking todoster v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/args.rs:19:26
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct ArgumentError(String);
[INFO] [stdout]    |            ------------- ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArgumentError` 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] 19 | pub struct ArgumentError(());
[INFO] [stdout]    |                          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/args.rs:19:26
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct ArgumentError(String);
[INFO] [stdout]    |            ------------- ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArgumentError` 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] 19 | pub struct ArgumentError(());
[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 1.76s
[INFO] running `Command { std: "docker" "inspect" "2def9e48cd7e2f5811418ee578fb5031831e203cbab8be721e6e52e2b77d2abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2def9e48cd7e2f5811418ee578fb5031831e203cbab8be721e6e52e2b77d2abd", kill_on_drop: false }`
[INFO] [stdout] 2def9e48cd7e2f5811418ee578fb5031831e203cbab8be721e6e52e2b77d2abd
[INFO] checking todoster-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate todoster 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate todoster 0.1.0 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 crates.io crate todoster 0.1.0
[INFO] finished tweaking crates.io crate todoster 0.1.0
[INFO] tweaked toml for crates.io crate todoster 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate todoster 0.1.0 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 708a17d52b5c2a225036f8a8f4fd5d87e8f1c906bf590b1e50143eecc394e426
[INFO] running `Command { std: "docker" "start" "-a" "708a17d52b5c2a225036f8a8f4fd5d87e8f1c906bf590b1e50143eecc394e426", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "708a17d52b5c2a225036f8a8f4fd5d87e8f1c906bf590b1e50143eecc394e426", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "708a17d52b5c2a225036f8a8f4fd5d87e8f1c906bf590b1e50143eecc394e426", kill_on_drop: false }`
[INFO] [stdout] 708a17d52b5c2a225036f8a8f4fd5d87e8f1c906bf590b1e50143eecc394e426
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 9544bce7fd0a2d750fe4e2887d1a809afc67e369b15ee40933c522c71aa94147
[INFO] running `Command { std: "docker" "start" "-a" "9544bce7fd0a2d750fe4e2887d1a809afc67e369b15ee40933c522c71aa94147", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking termion v2.0.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/termion-2.0.1/src/input.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 | /             match self.iter.next() {
[INFO] [stdout] 20 | |                 Some(Ok(Event::Key(k))) => return Some(Ok(k)),
[INFO] [stdout] 21 | |                 Some(Ok(_)) => continue,
[INFO] [stdout] 22 | |                 Some(Err(e)) => return Some(Err(e)),
[INFO] [stdout] 23 | |                 None => return None,
[INFO] [stdout] 24 | |             };
[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 `termion` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9544bce7fd0a2d750fe4e2887d1a809afc67e369b15ee40933c522c71aa94147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9544bce7fd0a2d750fe4e2887d1a809afc67e369b15ee40933c522c71aa94147", kill_on_drop: false }`
[INFO] [stdout] 9544bce7fd0a2d750fe4e2887d1a809afc67e369b15ee40933c522c71aa94147