[INFO] fetching crate ktmpl 0.9.1...
[INFO] checking ktmpl-0.9.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate ktmpl 0.9.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ktmpl 0.9.1 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 ktmpl 0.9.1
[INFO] finished tweaking crates.io crate ktmpl 0.9.1
[INFO] tweaked toml for crates.io crate ktmpl 0.9.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate ktmpl 0.9.1 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]  Downloading crates ...
[INFO] [stderr]   Downloaded textwrap v0.10.0
[INFO] [stderr]   Downloaded termion v1.5.1
[INFO] [stderr]   Downloaded utf8-ranges v1.0.2
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded byteorder v1.3.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.51
[INFO] [stderr]   Downloaded regex-syntax v0.6.5
[INFO] [stderr]   Downloaded clap v2.32.0
[INFO] [stderr]   Downloaded libc v0.2.49
[INFO] [stderr]   Downloaded regex v1.1.2
[INFO] [stderr]   Downloaded winapi v0.3.6
[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] 7944b938150bd62cd7bc9d00ad704442146c8eb86c14f81411ea19c631338b8e
[INFO] running `Command { std: "docker" "start" "-a" "7944b938150bd62cd7bc9d00ad704442146c8eb86c14f81411ea19c631338b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7944b938150bd62cd7bc9d00ad704442146c8eb86c14f81411ea19c631338b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7944b938150bd62cd7bc9d00ad704442146c8eb86c14f81411ea19c631338b8e", kill_on_drop: false }`
[INFO] [stdout] 7944b938150bd62cd7bc9d00ad704442146c8eb86c14f81411ea19c631338b8e
[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] af87d7e1d56336a4827282b621d20c1ae15c5c7a078feeb7afc589ade963d261
[INFO] running `Command { std: "docker" "start" "-a" "af87d7e1d56336a4827282b621d20c1ae15c5c7a078feeb7afc589ade963d261", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking ktmpl v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `description`, `display_name`, `parameter_type`, and `required` are never read
[INFO] [stdout]   --> src/parameter.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Parameter {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 11 |     pub description: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 12 |     pub display_name: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 13 |     pub name: String,
[INFO] [stdout] 14 |     pub parameter_type: Option<ParameterType>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 15 |     pub required: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Parameter` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `description`, `display_name`, `parameter_type`, and `required` are never read
[INFO] [stdout]   --> src/parameter.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Parameter {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 11 |     pub description: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 12 |     pub display_name: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 13 |     pub name: String,
[INFO] [stdout] 14 |     pub parameter_type: Option<ParameterType>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 15 |     pub required: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Parameter` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.03s
[INFO] running `Command { std: "docker" "inspect" "af87d7e1d56336a4827282b621d20c1ae15c5c7a078feeb7afc589ade963d261", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af87d7e1d56336a4827282b621d20c1ae15c5c7a078feeb7afc589ade963d261", kill_on_drop: false }`
[INFO] [stdout] af87d7e1d56336a4827282b621d20c1ae15c5c7a078feeb7afc589ade963d261
[INFO] checking ktmpl-0.9.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate ktmpl 0.9.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate ktmpl 0.9.1 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 ktmpl 0.9.1
[INFO] finished tweaking crates.io crate ktmpl 0.9.1
[INFO] tweaked toml for crates.io crate ktmpl 0.9.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate ktmpl 0.9.1 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-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] 12c6d6a662ac63373db75e2ce601b53e5b23f6e040ddab8a93dd1741670a9a9a
[INFO] running `Command { std: "docker" "start" "-a" "12c6d6a662ac63373db75e2ce601b53e5b23f6e040ddab8a93dd1741670a9a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12c6d6a662ac63373db75e2ce601b53e5b23f6e040ddab8a93dd1741670a9a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12c6d6a662ac63373db75e2ce601b53e5b23f6e040ddab8a93dd1741670a9a9a", kill_on_drop: false }`
[INFO] [stdout] 12c6d6a662ac63373db75e2ce601b53e5b23f6e040ddab8a93dd1741670a9a9a
[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] 5e98af0885f0017bf68c0258407cfece0b772fb4084edcfb3e0ada10f478fc93
[INFO] running `Command { std: "docker" "start" "-a" "5e98af0885f0017bf68c0258407cfece0b772fb4084edcfb3e0ada10f478fc93", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.1.2/src/exec.rs:755:13
[INFO] [stdout]     |
[INFO] [stdout] 755 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 756 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 757 | |                 self.cache,
[INFO] [stdout] 758 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 769 | |                 Quit => return Some(Quit),
[INFO] [stdout] 770 | |             };
[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" "5e98af0885f0017bf68c0258407cfece0b772fb4084edcfb3e0ada10f478fc93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e98af0885f0017bf68c0258407cfece0b772fb4084edcfb3e0ada10f478fc93", kill_on_drop: false }`
[INFO] [stdout] 5e98af0885f0017bf68c0258407cfece0b772fb4084edcfb3e0ada10f478fc93