[INFO] fetching crate lotus-lib 2.2.2...
[INFO] checking lotus-lib-2.2.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate lotus-lib 2.2.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate lotus-lib 2.2.2 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 lotus-lib 2.2.2
[INFO] finished tweaking crates.io crate lotus-lib 2.2.2
[INFO] tweaked toml for crates.io crate lotus-lib 2.2.2 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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding lz4_flex v0.9.5 (latest: v0.11.3)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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 oozle v0.1.5
[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] 80b4e62c40780ff9151e11e75385ade93b6329a6ce44311f6348e5ec2f64ea5c
[INFO] running `Command { std: "docker" "start" "-a" "80b4e62c40780ff9151e11e75385ade93b6329a6ce44311f6348e5ec2f64ea5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80b4e62c40780ff9151e11e75385ade93b6329a6ce44311f6348e5ec2f64ea5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80b4e62c40780ff9151e11e75385ade93b6329a6ce44311f6348e5ec2f64ea5c", kill_on_drop: false }`
[INFO] [stdout] 80b4e62c40780ff9151e11e75385ade93b6329a6ce44311f6348e5ec2f64ea5c
[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] f753b16c35f293ab00b8c35a660c3ab2236928de235882c27e9045252356c173
[INFO] running `Command { std: "docker" "start" "-a" "f753b16c35f293ab00b8c35a660c3ab2236928de235882c27e9045252356c173", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling scratch v1.0.7
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.120
[INFO] [stderr]    Compiling link-cplusplus v1.0.9
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling cxx v1.0.120
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking lz4_flex v0.9.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling cxx-build v1.0.120
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.120
[INFO] [stderr]    Compiling oozle v0.1.5
[INFO] [stderr]     Checking lotus-lib v2.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.36s
[INFO] running `Command { std: "docker" "inspect" "f753b16c35f293ab00b8c35a660c3ab2236928de235882c27e9045252356c173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f753b16c35f293ab00b8c35a660c3ab2236928de235882c27e9045252356c173", kill_on_drop: false }`
[INFO] [stdout] f753b16c35f293ab00b8c35a660c3ab2236928de235882c27e9045252356c173
[INFO] checking lotus-lib-2.2.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate lotus-lib 2.2.2 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate lotus-lib 2.2.2 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 lotus-lib 2.2.2
[INFO] finished tweaking crates.io crate lotus-lib 2.2.2
[INFO] tweaked toml for crates.io crate lotus-lib 2.2.2 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] [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-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] 2e80a2b92334b80676c052b4bf39558b8026cad374fd61002cce19a2ae98b580
[INFO] running `Command { std: "docker" "start" "-a" "2e80a2b92334b80676c052b4bf39558b8026cad374fd61002cce19a2ae98b580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e80a2b92334b80676c052b4bf39558b8026cad374fd61002cce19a2ae98b580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e80a2b92334b80676c052b4bf39558b8026cad374fd61002cce19a2ae98b580", kill_on_drop: false }`
[INFO] [stdout] 2e80a2b92334b80676c052b4bf39558b8026cad374fd61002cce19a2ae98b580
[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] 00514b6006548bea514b7bb501867afa35faed5a1dd9fc4b2b8889e3df4d96b7
[INFO] running `Command { std: "docker" "start" "-a" "00514b6006548bea514b7bb501867afa35faed5a1dd9fc4b2b8889e3df4d96b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling scratch v1.0.7
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.120
[INFO] [stderr]    Compiling link-cplusplus v1.0.9
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]    Compiling cxx v1.0.120
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking lz4_flex v0.9.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling cxx-build v1.0.120
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/cxx-build-1.0.120/src/target.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | /         if target_dir.is_absolute() {
[INFO] [stdout] 14 | |             return TargetDir::Path(target_dir);
[INFO] [stdout] 15 | |         } else {
[INFO] [stdout] 16 | |             return TargetDir::Unknown;
[INFO] [stdout] 17 | |         };
[INFO] [stdout]    | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.120
[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 `cxx-build` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "00514b6006548bea514b7bb501867afa35faed5a1dd9fc4b2b8889e3df4d96b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00514b6006548bea514b7bb501867afa35faed5a1dd9fc4b2b8889e3df4d96b7", kill_on_drop: false }`
[INFO] [stdout] 00514b6006548bea514b7bb501867afa35faed5a1dd9fc4b2b8889e3df4d96b7