[INFO] fetching crate doubter-macros 0.1.0...
[INFO] checking doubter-macros-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate doubter-macros 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate doubter-macros 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 doubter-macros 0.1.0
[INFO] finished tweaking crates.io crate doubter-macros 0.1.0
[INFO] tweaked toml for crates.io crate doubter-macros 0.1.0 written to /workspace/builds/worker-5-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 12 packages
[INFO] [stderr]       Adding bitflags v0.9.1 (latest: v2.5.0)
[INFO] [stderr]       Adding bytecount v0.3.2 (latest: v0.6.7)
[INFO] [stderr]       Adding glob v0.2.11 (latest: v0.3.1)
[INFO] [stderr]       Adding proc-macro-hack v0.4.3 (latest: v0.5.20+deprecated)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.79)
[INFO] [stderr]       Adding pulldown-cmark v0.1.2 (latest: v0.10.2)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.35)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.58)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[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 bytecount v0.3.2
[INFO] [stderr]   Downloaded proc-macro-hack v0.4.3
[INFO] [stderr]   Downloaded doubter-impl v0.1.0
[INFO] [stderr]   Downloaded pulldown-cmark v0.1.2
[INFO] [stderr]   Downloaded proc-macro-hack-impl v0.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8becc45e0a94bd05403e7f6ca2dce9c22ed2215ecf092519559ed7d8f7f073e9
[INFO] running `Command { std: "docker" "start" "-a" "8becc45e0a94bd05403e7f6ca2dce9c22ed2215ecf092519559ed7d8f7f073e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8becc45e0a94bd05403e7f6ca2dce9c22ed2215ecf092519559ed7d8f7f073e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8becc45e0a94bd05403e7f6ca2dce9c22ed2215ecf092519559ed7d8f7f073e9", kill_on_drop: false }`
[INFO] [stdout] 8becc45e0a94bd05403e7f6ca2dce9c22ed2215ecf092519559ed7d8f7f073e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 9e441a17f02dc0535f2e78d0f57f0b8f4a839c880c5580d34403790dfa7aaf83
[INFO] running `Command { std: "docker" "start" "-a" "9e441a17f02dc0535f2e78d0f57f0b8f4a839c880c5580d34403790dfa7aaf83", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking bytecount v0.3.2
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.3
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]     Checking proc-macro-hack v0.4.3
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking doubter-impl v0.1.0
[INFO] [stderr]     Checking doubter-macros v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.28s
[INFO] running `Command { std: "docker" "inspect" "9e441a17f02dc0535f2e78d0f57f0b8f4a839c880c5580d34403790dfa7aaf83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e441a17f02dc0535f2e78d0f57f0b8f4a839c880c5580d34403790dfa7aaf83", kill_on_drop: false }`
[INFO] [stdout] 9e441a17f02dc0535f2e78d0f57f0b8f4a839c880c5580d34403790dfa7aaf83
[INFO] checking doubter-macros-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate doubter-macros 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate doubter-macros 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 doubter-macros 0.1.0
[INFO] finished tweaking crates.io crate doubter-macros 0.1.0
[INFO] tweaked toml for crates.io crate doubter-macros 0.1.0 written to /workspace/builds/worker-5-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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 9fa2ee57a64e334aa9cac08954a4b1da69b1a1ce25868806fc42c9270839a287
[INFO] running `Command { std: "docker" "start" "-a" "9fa2ee57a64e334aa9cac08954a4b1da69b1a1ce25868806fc42c9270839a287", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fa2ee57a64e334aa9cac08954a4b1da69b1a1ce25868806fc42c9270839a287", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fa2ee57a64e334aa9cac08954a4b1da69b1a1ce25868806fc42c9270839a287", kill_on_drop: false }`
[INFO] [stdout] 9fa2ee57a64e334aa9cac08954a4b1da69b1a1ce25868806fc42c9270839a287
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] d81fa3e0975cec860bbe0a36846bab8bb26c1bb8d048f0ae95e16a756c5cc758
[INFO] running `Command { std: "docker" "start" "-a" "d81fa3e0975cec860bbe0a36846bab8bb26c1bb8d048f0ae95e16a756c5cc758", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.3
[INFO] [stderr]     Checking bytecount v0.3.2
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking proc-macro-hack v0.4.3
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/pulldown-cmark-0.1.2/src/parse.rs:549:13
[INFO] [stdout]     |
[INFO] [stdout] 549 |             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] [stderr]     Checking quote v0.6.13
[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 `pulldown-cmark` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d81fa3e0975cec860bbe0a36846bab8bb26c1bb8d048f0ae95e16a756c5cc758", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d81fa3e0975cec860bbe0a36846bab8bb26c1bb8d048f0ae95e16a756c5cc758", kill_on_drop: false }`
[INFO] [stdout] d81fa3e0975cec860bbe0a36846bab8bb26c1bb8d048f0ae95e16a756c5cc758