[INFO] fetching crate adaptive_backoff 0.2.1...
[INFO] checking adaptive_backoff-0.2.1 against try#e61be1c89a2b3fd02452eef3c6186592711e4772 for pr-98456
[INFO] extracting crate adaptive_backoff 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate adaptive_backoff 0.2.1 on toolchain e61be1c89a2b3fd02452eef3c6186592711e4772
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e61be1c89a2b3fd02452eef3c6186592711e4772" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate adaptive_backoff 0.2.1
[INFO] finished tweaking crates.io crate adaptive_backoff 0.2.1
[INFO] tweaked toml for crates.io crate adaptive_backoff 0.2.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e61be1c89a2b3fd02452eef3c6186592711e4772" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e61be1c89a2b3fd02452eef3c6186592711e4772" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+e61be1c89a2b3fd02452eef3c6186592711e4772" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5580776eada9bc95d1b1b4f5370ef1085f3e8497028e3000640c122a168ac999
[INFO] running `Command { std: "docker" "start" "-a" "5580776eada9bc95d1b1b4f5370ef1085f3e8497028e3000640c122a168ac999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5580776eada9bc95d1b1b4f5370ef1085f3e8497028e3000640c122a168ac999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5580776eada9bc95d1b1b4f5370ef1085f3e8497028e3000640c122a168ac999", kill_on_drop: false }`
[INFO] [stdout] 5580776eada9bc95d1b1b4f5370ef1085f3e8497028e3000640c122a168ac999
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+e61be1c89a2b3fd02452eef3c6186592711e4772" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5d673d770d2dea4c2140edef50ab93336fdd27555e534acdb29a25323a96aec
[INFO] running `Command { std: "docker" "start" "-a" "e5d673d770d2dea4c2140edef50ab93336fdd27555e534acdb29a25323a96aec", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling anyhow v1.0.58
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking adaptive_backoff v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib/adaptive.rs:156:15
[INFO] [stdout]     |
[INFO] [stdout] 156 |             ..AdaptiveBuilder::default()
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^ cannot infer type for type parameter `BB` declared on the struct `AdaptiveBuilder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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 `adaptive_backoff` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib/adaptive.rs:156:15
[INFO] [stdout]     |
[INFO] [stdout] 156 |             ..AdaptiveBuilder::default()
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^ cannot infer type for type parameter `BB` declared on the struct `AdaptiveBuilder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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 `adaptive_backoff` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e5d673d770d2dea4c2140edef50ab93336fdd27555e534acdb29a25323a96aec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5d673d770d2dea4c2140edef50ab93336fdd27555e534acdb29a25323a96aec", kill_on_drop: false }`
[INFO] [stdout] e5d673d770d2dea4c2140edef50ab93336fdd27555e534acdb29a25323a96aec