[INFO] fetching crate dia-semver 11.0.1...
[INFO] checking dia-semver-11.0.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate dia-semver 11.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate dia-semver 11.0.1 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 dia-semver 11.0.1
[INFO] finished tweaking crates.io crate dia-semver 11.0.1
[INFO] tweaked toml for crates.io crate dia-semver 11.0.1 written to /workspace/builds/worker-4-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] 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-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] aa736a3a1a75e12735772d5d74bfd647ee995e4941b73ca148c53d088d6a8e77
[INFO] running `Command { std: "docker" "start" "-a" "aa736a3a1a75e12735772d5d74bfd647ee995e4941b73ca148c53d088d6a8e77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa736a3a1a75e12735772d5d74bfd647ee995e4941b73ca148c53d088d6a8e77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa736a3a1a75e12735772d5d74bfd647ee995e4941b73ca148c53d088d6a8e77", kill_on_drop: false }`
[INFO] [stdout] aa736a3a1a75e12735772d5d74bfd647ee995e4941b73ca148c53d088d6a8e77
[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] 8d03934ebe68c7c5e4dc8bf81635d7762f49acb06b0e5963e144dcf32674ba00
[INFO] running `Command { std: "docker" "start" "-a" "8d03934ebe68c7c5e4dc8bf81635d7762f49acb06b0e5963e144dcf32674ba00", kill_on_drop: false }`
[INFO] [stderr]     Checking dia-semver v11.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "8d03934ebe68c7c5e4dc8bf81635d7762f49acb06b0e5963e144dcf32674ba00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d03934ebe68c7c5e4dc8bf81635d7762f49acb06b0e5963e144dcf32674ba00", kill_on_drop: false }`
[INFO] [stdout] 8d03934ebe68c7c5e4dc8bf81635d7762f49acb06b0e5963e144dcf32674ba00
[INFO] checking dia-semver-11.0.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate dia-semver 11.0.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate dia-semver 11.0.1 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 dia-semver 11.0.1
[INFO] finished tweaking crates.io crate dia-semver 11.0.1
[INFO] tweaked toml for crates.io crate dia-semver 11.0.1 written to /workspace/builds/worker-4-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] 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] 4bcf9d0b2f242025f0c3721b5a0c320cf63da235087d066391f6a86e573f7f7b
[INFO] running `Command { std: "docker" "start" "-a" "4bcf9d0b2f242025f0c3721b5a0c320cf63da235087d066391f6a86e573f7f7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bcf9d0b2f242025f0c3721b5a0c320cf63da235087d066391f6a86e573f7f7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bcf9d0b2f242025f0c3721b5a0c320cf63da235087d066391f6a86e573f7f7b", kill_on_drop: false }`
[INFO] [stdout] 4bcf9d0b2f242025f0c3721b5a0c320cf63da235087d066391f6a86e573f7f7b
[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] f75e2c7150216cdec1dc077eb4a9680a2950104a57fd1c444e491fa65d8b7e2d
[INFO] running `Command { std: "docker" "start" "-a" "f75e2c7150216cdec1dc077eb4a9680a2950104a57fd1c444e491fa65d8b7e2d", kill_on_drop: false }`
[INFO] [stderr]     Checking dia-semver v11.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> src/semver.rs:733:17
[INFO] [stdout]     |
[INFO] [stdout] 733 | /                 loop {
[INFO] [stdout] 734 | |                     match (self_pre_release.next(), other_pre_release.next()) {
[INFO] [stdout] 735 | |                         (None, None) => return Ordering::Equal,
[INFO] [stdout] 736 | |                         (None, Some(_)) => return Ordering::Less,
[INFO] [stdout] ...   |
[INFO] [stdout] 759 | |                     };
[INFO] [stdout] 760 | |                 }
[INFO] [stdout]     | |_________________^ cannot satisfy `_ -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> src/semver.rs:733:17
[INFO] [stdout]     |
[INFO] [stdout] 733 | /                 loop {
[INFO] [stdout] 734 | |                     match (self_pre_release.next(), other_pre_release.next()) {
[INFO] [stdout] 735 | |                         (None, None) => return Ordering::Equal,
[INFO] [stdout] 736 | |                         (None, Some(_)) => return Ordering::Less,
[INFO] [stdout] ...   |
[INFO] [stdout] 759 | |                     };
[INFO] [stdout] 760 | |                 }
[INFO] [stdout]     | |_________________^ cannot satisfy `_ -> _`
[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 E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dia-semver` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dia-semver` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f75e2c7150216cdec1dc077eb4a9680a2950104a57fd1c444e491fa65d8b7e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f75e2c7150216cdec1dc077eb4a9680a2950104a57fd1c444e491fa65d8b7e2d", kill_on_drop: false }`
[INFO] [stdout] f75e2c7150216cdec1dc077eb4a9680a2950104a57fd1c444e491fa65d8b7e2d