[INFO] fetching crate time_period 1.0.0...
[INFO] checking time_period-1.0.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate time_period 1.0.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate time_period 1.0.0 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 time_period 1.0.0
[INFO] finished tweaking crates.io crate time_period 1.0.0
[INFO] tweaked toml for crates.io crate time_period 1.0.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 35 packages
[INFO] [stderr]       Adding svg v0.13.1 (latest: v0.16.0)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.55.0)
[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 svg v0.13.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] ba9adf1be957b55666e6191c3a79a9b4f9d9986b60de10572a9a1dfd6acb8c8e
[INFO] running `Command { std: "docker" "start" "-a" "ba9adf1be957b55666e6191c3a79a9b4f9d9986b60de10572a9a1dfd6acb8c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba9adf1be957b55666e6191c3a79a9b4f9d9986b60de10572a9a1dfd6acb8c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba9adf1be957b55666e6191c3a79a9b4f9d9986b60de10572a9a1dfd6acb8c8e", kill_on_drop: false }`
[INFO] [stdout] ba9adf1be957b55666e6191c3a79a9b4f9d9986b60de10572a9a1dfd6acb8c8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 30921113cb32c9d96a4b9522a7f5bb02ca6af60f66f41d1c821d39139eb54bf2
[INFO] running `Command { std: "docker" "start" "-a" "30921113cb32c9d96a4b9522a7f5bb02ca6af60f66f41d1c821d39139eb54bf2", kill_on_drop: false }`
[INFO] [stderr]     Checking svg v0.13.1
[INFO] [stderr]     Checking time_period v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `IMPOSSIBLE`, `PeriodError`, `PeriodResult`
[INFO] [stdout]  --> src/period.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use result::{PeriodError, PeriodResult, IMPOSSIBLE};
[INFO] [stdout]   |                  ^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IMPOSSIBLE`, `PeriodError`, `PeriodResult`
[INFO] [stdout]  --> src/period.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use result::{PeriodError, PeriodResult, IMPOSSIBLE};
[INFO] [stdout]   |                  ^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "30921113cb32c9d96a4b9522a7f5bb02ca6af60f66f41d1c821d39139eb54bf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30921113cb32c9d96a4b9522a7f5bb02ca6af60f66f41d1c821d39139eb54bf2", kill_on_drop: false }`
[INFO] [stdout] 30921113cb32c9d96a4b9522a7f5bb02ca6af60f66f41d1c821d39139eb54bf2
[INFO] checking time_period-1.0.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate time_period 1.0.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate time_period 1.0.0 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 time_period 1.0.0
[INFO] finished tweaking crates.io crate time_period 1.0.0
[INFO] tweaked toml for crates.io crate time_period 1.0.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] e369b1327d316e60c3c62896a97f192bea8a7bda8734349de3118f32932f8bc1
[INFO] running `Command { std: "docker" "start" "-a" "e369b1327d316e60c3c62896a97f192bea8a7bda8734349de3118f32932f8bc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e369b1327d316e60c3c62896a97f192bea8a7bda8734349de3118f32932f8bc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e369b1327d316e60c3c62896a97f192bea8a7bda8734349de3118f32932f8bc1", kill_on_drop: false }`
[INFO] [stdout] e369b1327d316e60c3c62896a97f192bea8a7bda8734349de3118f32932f8bc1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 2ee6202c432b1d4ef19d3721ab18e977dd8303b1cc79f7a6a2f2803dca708ba7
[INFO] running `Command { std: "docker" "start" "-a" "2ee6202c432b1d4ef19d3721ab18e977dd8303b1cc79f7a6a2f2803dca708ba7", kill_on_drop: false }`
[INFO] [stderr]     Checking svg v0.13.1
[INFO] [stderr]     Checking time_period v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `IMPOSSIBLE`, `PeriodError`, `PeriodResult`
[INFO] [stdout]  --> src/period.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use result::{PeriodError, PeriodResult, IMPOSSIBLE};
[INFO] [stdout]   |                  ^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> src/period.rs:181:16
[INFO] [stdout]     |
[INFO] [stdout] 181 |           } else if self.is_strictly_after(period) {
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 182 | |             return Some(Period {
[INFO] [stdout] 183 | |                 start: period.end,
[INFO] [stdout] 184 | |                 end: self.start,
[INFO] [stdout] ...   |
[INFO] [stdout] 187 | |             return None;
[INFO] [stdout] 188 | |         };
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `time_period` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2ee6202c432b1d4ef19d3721ab18e977dd8303b1cc79f7a6a2f2803dca708ba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ee6202c432b1d4ef19d3721ab18e977dd8303b1cc79f7a6a2f2803dca708ba7", kill_on_drop: false }`
[INFO] [stdout] 2ee6202c432b1d4ef19d3721ab18e977dd8303b1cc79f7a6a2f2803dca708ba7