[INFO] cloning repository https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidpdrsn%2Fjuniper-look-ahead-with-fragments-error", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidpdrsn%2Fjuniper-look-ahead-with-fragments-error'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dced51ab594d08a2e0bb3f59dfb06929c66a42e1
[INFO] checking davidpdrsn/juniper-look-ahead-with-fragments-error against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidpdrsn%2Fjuniper-look-ahead-with-fragments-error" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error 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 git repo https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error
[INFO] finished tweaking git repo https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error
[INFO] tweaked toml for git repo https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uuid v0.7.4
[INFO] [stderr]   Downloaded unicode-normalization v0.1.8
[INFO] [stderr]   Downloaded smallvec v0.6.10
[INFO] [stderr]   Downloaded serde v1.0.97
[INFO] [stderr]   Downloaded autocfg v0.1.5
[INFO] [stderr]   Downloaded indexmap v1.0.2
[INFO] [stderr]   Downloaded aho-corasick v0.7.4
[INFO] [stderr]   Downloaded syn v0.15.40
[INFO] [stderr]   Downloaded regex-syntax v0.6.10
[INFO] [stderr]   Downloaded libc v0.2.60
[INFO] [stderr]   Downloaded regex v1.2.0
[INFO] [stderr]   Downloaded juniper_codegen v0.13.0
[INFO] [stderr]   Downloaded serde_derive v1.0.97
[INFO] [stderr]   Downloaded juniper v0.13.0
[INFO] [stderr]   Downloaded ucd-util v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 256cb2a7d90852df953edb0af63707d8dbe7ad5838fda69cbc166779cf94e2da
[INFO] running `Command { std: "docker" "start" "-a" "256cb2a7d90852df953edb0af63707d8dbe7ad5838fda69cbc166779cf94e2da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "256cb2a7d90852df953edb0af63707d8dbe7ad5838fda69cbc166779cf94e2da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "256cb2a7d90852df953edb0af63707d8dbe7ad5838fda69cbc166779cf94e2da", kill_on_drop: false }`
[INFO] [stdout] 256cb2a7d90852df953edb0af63707d8dbe7ad5838fda69cbc166779cf94e2da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3df9c24bb4ff7bbe62945085cf2b5b331ceec45f5fa274d20a051e48ed07eaf1
[INFO] running `Command { std: "docker" "start" "-a" "3df9c24bb4ff7bbe62945085cf2b5b331ceec45f5fa274d20a051e48ed07eaf1", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling syn v0.15.40
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.10
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling regex v1.2.0
[INFO] [stderr]     Checking indexmap v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.97
[INFO] [stderr]    Compiling juniper_codegen v0.13.0
[INFO] [stderr]     Checking juniper v0.13.0
[INFO] [stderr]     Checking juniper-look-ahead-with-fragments-error v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.40s
[INFO] running `Command { std: "docker" "inspect" "3df9c24bb4ff7bbe62945085cf2b5b331ceec45f5fa274d20a051e48ed07eaf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3df9c24bb4ff7bbe62945085cf2b5b331ceec45f5fa274d20a051e48ed07eaf1", kill_on_drop: false }`
[INFO] [stdout] 3df9c24bb4ff7bbe62945085cf2b5b331ceec45f5fa274d20a051e48ed07eaf1
[INFO] checking davidpdrsn/juniper-look-ahead-with-fragments-error against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidpdrsn%2Fjuniper-look-ahead-with-fragments-error" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error 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 git repo https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error
[INFO] finished tweaking git repo https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error
[INFO] tweaked toml for git repo https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/davidpdrsn/juniper-look-ahead-with-fragments-error 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 419262cf3b45d9214bfcc001aa5aeba63a086793acd6b7c95442ecdc3d562c1e
[INFO] running `Command { std: "docker" "start" "-a" "419262cf3b45d9214bfcc001aa5aeba63a086793acd6b7c95442ecdc3d562c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "419262cf3b45d9214bfcc001aa5aeba63a086793acd6b7c95442ecdc3d562c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "419262cf3b45d9214bfcc001aa5aeba63a086793acd6b7c95442ecdc3d562c1e", kill_on_drop: false }`
[INFO] [stdout] 419262cf3b45d9214bfcc001aa5aeba63a086793acd6b7c95442ecdc3d562c1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 52e75cc404ddc528c78e3297a1b5bddcf7d43cd555440b194c1c902fcb604e9f
[INFO] running `Command { std: "docker" "start" "-a" "52e75cc404ddc528c78e3297a1b5bddcf7d43cd555440b194c1c902fcb604e9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v0.15.40
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.10
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling regex v1.2.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.2.0/src/exec.rs:795:13
[INFO] [stdout]     |
[INFO] [stdout] 795 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 796 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 797 | |                 self.cache,
[INFO] [stdout] 798 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 809 | |                 Quit => return Some(Quit),
[INFO] [stdout] 810 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[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 `regex` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "52e75cc404ddc528c78e3297a1b5bddcf7d43cd555440b194c1c902fcb604e9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52e75cc404ddc528c78e3297a1b5bddcf7d43cd555440b194c1c902fcb604e9f", kill_on_drop: false }`
[INFO] [stdout] 52e75cc404ddc528c78e3297a1b5bddcf7d43cd555440b194c1c902fcb604e9f