[INFO] fetching crate gain-lep 0.1.3...
[INFO] checking gain-lep-0.1.3 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate gain-lep 0.1.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate gain-lep 0.1.3 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 gain-lep 0.1.3
[INFO] finished tweaking crates.io crate gain-lep 0.1.3
[INFO] tweaked toml for crates.io crate gain-lep 0.1.3 written to /workspace/builds/worker-2-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 11 packages
[INFO] [stderr]       Adding async-task v1.3.1 (latest: v4.7.0)
[INFO] [stderr]       Adding lep v0.4.5 (latest: v0.5.0)
[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 gain v0.5.0
[INFO] [stderr]   Downloaded lep v0.4.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 795381bc37cde88279fd1b9d1c67cf3eefcc10cb5acbe8f8fbb3c16bb2fb9d7a
[INFO] running `Command { std: "docker" "start" "-a" "795381bc37cde88279fd1b9d1c67cf3eefcc10cb5acbe8f8fbb3c16bb2fb9d7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "795381bc37cde88279fd1b9d1c67cf3eefcc10cb5acbe8f8fbb3c16bb2fb9d7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "795381bc37cde88279fd1b9d1c67cf3eefcc10cb5acbe8f8fbb3c16bb2fb9d7a", kill_on_drop: false }`
[INFO] [stdout] 795381bc37cde88279fd1b9d1c67cf3eefcc10cb5acbe8f8fbb3c16bb2fb9d7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] a309ca7d279ab30bf756f593ffdc1367c39aa96dbf74c8cec5dcdc5290971abe
[INFO] running `Command { std: "docker" "start" "-a" "a309ca7d279ab30bf756f593ffdc1367c39aa96dbf74c8cec5dcdc5290971abe", kill_on_drop: false }`
[INFO] [stderr]     Checking lep v0.4.5
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking async-task v1.3.1
[INFO] [stderr]     Checking gain v0.5.0
[INFO] [stderr]     Checking gain-lep v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "a309ca7d279ab30bf756f593ffdc1367c39aa96dbf74c8cec5dcdc5290971abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a309ca7d279ab30bf756f593ffdc1367c39aa96dbf74c8cec5dcdc5290971abe", kill_on_drop: false }`
[INFO] [stdout] a309ca7d279ab30bf756f593ffdc1367c39aa96dbf74c8cec5dcdc5290971abe
[INFO] checking gain-lep-0.1.3 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate gain-lep 0.1.3 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate gain-lep 0.1.3 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 gain-lep 0.1.3
[INFO] finished tweaking crates.io crate gain-lep 0.1.3
[INFO] tweaked toml for crates.io crate gain-lep 0.1.3 written to /workspace/builds/worker-2-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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 1c80afc81eb0bd7da7d39988ad5509048e25a7f8bb8e5f4c3a8fddcecc243d62
[INFO] running `Command { std: "docker" "start" "-a" "1c80afc81eb0bd7da7d39988ad5509048e25a7f8bb8e5f4c3a8fddcecc243d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c80afc81eb0bd7da7d39988ad5509048e25a7f8bb8e5f4c3a8fddcecc243d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c80afc81eb0bd7da7d39988ad5509048e25a7f8bb8e5f4c3a8fddcecc243d62", kill_on_drop: false }`
[INFO] [stdout] 1c80afc81eb0bd7da7d39988ad5509048e25a7f8bb8e5f4c3a8fddcecc243d62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3837de6516f40508e4d5924c5771acb5119e3ab8e89c45fe177a7982a0a9f4bc
[INFO] running `Command { std: "docker" "start" "-a" "3837de6516f40508e4d5924c5771acb5119e3ab8e89c45fe177a7982a0a9f4bc", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking lep v0.4.5
[INFO] [stderr]     Checking async-task v1.3.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/lep-0.4.5/src/eval.rs:330:5
[INFO] [stdout]     |
[INFO] [stdout] 330 |     panic!();
[INFO] [stdout]     |     ^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[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 `lep` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3837de6516f40508e4d5924c5771acb5119e3ab8e89c45fe177a7982a0a9f4bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3837de6516f40508e4d5924c5771acb5119e3ab8e89c45fe177a7982a0a9f4bc", kill_on_drop: false }`
[INFO] [stdout] 3837de6516f40508e4d5924c5771acb5119e3ab8e89c45fe177a7982a0a9f4bc