[INFO] fetching crate sparrow 0.1.0...
[INFO] checking sparrow-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate sparrow 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate sparrow 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 sparrow 0.1.0
[INFO] finished tweaking crates.io crate sparrow 0.1.0
[INFO] tweaked toml for crates.io crate sparrow 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate sparrow 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 syn v1.0.50
[INFO] [stderr]   Downloaded rstest v0.6.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 627a99edc8008de506258ecabc84b8f3e4cc07b32bdd04e4c2ce7a3617b7eaec
[INFO] running `Command { std: "docker" "start" "-a" "627a99edc8008de506258ecabc84b8f3e4cc07b32bdd04e4c2ce7a3617b7eaec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "627a99edc8008de506258ecabc84b8f3e4cc07b32bdd04e4c2ce7a3617b7eaec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "627a99edc8008de506258ecabc84b8f3e4cc07b32bdd04e4c2ce7a3617b7eaec", kill_on_drop: false }`
[INFO] [stdout] 627a99edc8008de506258ecabc84b8f3e4cc07b32bdd04e4c2ce7a3617b7eaec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 493ecaf0fb3ebdd69f105c18352824ef09e5c8d1e05c907be67305365b6fab43
[INFO] running `Command { std: "docker" "start" "-a" "493ecaf0fb3ebdd69f105c18352824ef09e5c8d1e05c907be67305365b6fab43", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rstest v0.6.4
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking sparrow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.18s
[INFO] running `Command { std: "docker" "inspect" "493ecaf0fb3ebdd69f105c18352824ef09e5c8d1e05c907be67305365b6fab43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "493ecaf0fb3ebdd69f105c18352824ef09e5c8d1e05c907be67305365b6fab43", kill_on_drop: false }`
[INFO] [stdout] 493ecaf0fb3ebdd69f105c18352824ef09e5c8d1e05c907be67305365b6fab43
[INFO] checking sparrow-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate sparrow 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate sparrow 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 sparrow 0.1.0
[INFO] finished tweaking crates.io crate sparrow 0.1.0
[INFO] tweaked toml for crates.io crate sparrow 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate sparrow 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 45cf6b8044538ba196baad4469ba88f41ba807a60babbe00ee65837d014cf4f7
[INFO] running `Command { std: "docker" "start" "-a" "45cf6b8044538ba196baad4469ba88f41ba807a60babbe00ee65837d014cf4f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45cf6b8044538ba196baad4469ba88f41ba807a60babbe00ee65837d014cf4f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45cf6b8044538ba196baad4469ba88f41ba807a60babbe00ee65837d014cf4f7", kill_on_drop: false }`
[INFO] [stdout] 45cf6b8044538ba196baad4469ba88f41ba807a60babbe00ee65837d014cf4f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 1172a3575c146055be63e8774ed3c849a40cf6a13a274c2752cf8f5e0410b297
[INFO] running `Command { std: "docker" "start" "-a" "1172a3575c146055be63e8774ed3c849a40cf6a13a274c2752cf8f5e0410b297", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rstest v0.6.4
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/chrono-0.4.19/src/format/parse.rs:491:21
[INFO] [stdout]     |
[INFO] [stdout] 491 |                     Err(INVALID)?;
[INFO] [stdout]     |                     ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 491 |                     Err::<T, format::ParseError>(INVALID)?;
[INFO] [stdout]     |                        +++++++++++++++++++++++++
[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 `chrono` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1172a3575c146055be63e8774ed3c849a40cf6a13a274c2752cf8f5e0410b297", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1172a3575c146055be63e8774ed3c849a40cf6a13a274c2752cf8f5e0410b297", kill_on_drop: false }`
[INFO] [stdout] 1172a3575c146055be63e8774ed3c849a40cf6a13a274c2752cf8f5e0410b297