[INFO] cloning repository https://github.com/rongfengliang/rustdemoapp [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rongfengliang/rustdemoapp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frongfengliang%2Frustdemoapp", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frongfengliang%2Frustdemoapp'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0c3f2a9cb0a589928e1f68e074c690fb0815f81d [INFO] checking rongfengliang/rustdemoapp against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frongfengliang%2Frustdemoapp" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rongfengliang/rustdemoapp 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/rongfengliang/rustdemoapp [INFO] finished tweaking git repo https://github.com/rongfengliang/rustdemoapp [INFO] tweaked toml for git repo https://github.com/rongfengliang/rustdemoapp written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/rongfengliang/rustdemoapp 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 pest v1.0.3 [INFO] [stderr] Downloaded pest_derive v1.0.3 [INFO] [stderr] Downloaded handlebars v0.32.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 788b05b0e77b8bf4e1f076bfb0b8158d003728d8551ce3c1b3f3f406831fbd01 [INFO] running `Command { std: "docker" "start" "-a" "788b05b0e77b8bf4e1f076bfb0b8158d003728d8551ce3c1b3f3f406831fbd01", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "788b05b0e77b8bf4e1f076bfb0b8158d003728d8551ce3c1b3f3f406831fbd01", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "788b05b0e77b8bf4e1f076bfb0b8158d003728d8551ce3c1b3f3f406831fbd01", kill_on_drop: false }` [INFO] [stdout] 788b05b0e77b8bf4e1f076bfb0b8158d003728d8551ce3c1b3f3f406831fbd01 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 5eece81781300b7af6889b0608390469860eb59ee716a72b9a8cff9e47b7d42d [INFO] running `Command { std: "docker" "start" "-a" "5eece81781300b7af6889b0608390469860eb59ee716a72b9a8cff9e47b7d42d", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.36 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling unicode-xid v0.0.4 [INFO] [stderr] Checking lazy_static v1.0.0 [INFO] [stderr] Compiling quote v0.3.15 [INFO] [stderr] Checking num-traits v0.2.0 [INFO] [stderr] Checking cfg-if v0.1.2 [INFO] [stderr] Checking utf8-ranges v1.0.0 [INFO] [stderr] Compiling pest v1.0.3 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking regex-syntax v0.4.2 [INFO] [stderr] Compiling synom v0.11.3 [INFO] [stderr] Checking thread_local v0.3.5 [INFO] [stderr] Checking itoa v0.3.4 [INFO] [stderr] Compiling syn v0.11.11 [INFO] [stderr] Checking serde v1.0.27 [INFO] [stderr] Checking dtoa v0.4.2 [INFO] [stderr] Checking log v0.4.1 [INFO] [stderr] Checking quick-error v1.2.1 [INFO] [stderr] Checking memchr v2.0.1 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking aho-corasick v0.6.4 [INFO] [stderr] Checking regex v0.2.6 [INFO] [stderr] Compiling pest_derive v1.0.3 [INFO] [stderr] Checking serde_json v1.0.9 [INFO] [stderr] Checking handlebars v0.32.0 [INFO] [stderr] Checking first v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/main.rs:11:16 [INFO] [stdout] | [INFO] [stdout] 11 | fn appdemo(name:&str)->&str{ [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/main.rs:15:10 [INFO] [stdout] | [INFO] [stdout] 15 | fn f(n: T) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/main.rs:11:16 [INFO] [stdout] | [INFO] [stdout] 11 | fn appdemo(name:&str)->&str{ [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/main.rs:15:10 [INFO] [stdout] | [INFO] [stdout] 15 | fn f(n: T) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/main.rs:28:21 [INFO] [stdout] | [INFO] [stdout] 28 | fn login(&self, name: &str) -> &str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/main.rs:28:21 [INFO] [stdout] | [INFO] [stdout] 28 | fn login(&self, name: &str) -> &str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `say_demo` is never used [INFO] [stdout] --> src/main.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn say_demo(name: &str) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `age` is never read [INFO] [stdout] --> src/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct User { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 7 | name: &'static str, [INFO] [stdout] 8 | age: u32, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `f` is never used [INFO] [stdout] --> src/main.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 10 | trait UserOperator { [INFO] [stdout] | ------------ associated function in this trait [INFO] [stdout] ... [INFO] [stdout] 15 | fn f(n: T) { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `second` is never used [INFO] [stdout] --> src/main.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 19 | impl User{ [INFO] [stdout] | --------- associated function in this implementation [INFO] [stdout] ... [INFO] [stdout] 23 | fn second(){ [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `say_demo` is never used [INFO] [stdout] --> src/main.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn say_demo(name: &str) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `age` is never read [INFO] [stdout] --> src/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct User { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 7 | name: &'static str, [INFO] [stdout] 8 | age: u32, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `f` is never used [INFO] [stdout] --> src/main.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 10 | trait UserOperator { [INFO] [stdout] | ------------ associated function in this trait [INFO] [stdout] ... [INFO] [stdout] 15 | fn f(n: T) { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `second` is never used [INFO] [stdout] --> src/main.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 19 | impl User{ [INFO] [stdout] | --------- associated function in this implementation [INFO] [stdout] ... [INFO] [stdout] 23 | fn second(){ [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.59s [INFO] running `Command { std: "docker" "inspect" "5eece81781300b7af6889b0608390469860eb59ee716a72b9a8cff9e47b7d42d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5eece81781300b7af6889b0608390469860eb59ee716a72b9a8cff9e47b7d42d", kill_on_drop: false }` [INFO] [stdout] 5eece81781300b7af6889b0608390469860eb59ee716a72b9a8cff9e47b7d42d [INFO] checking rongfengliang/rustdemoapp against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frongfengliang%2Frustdemoapp" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rongfengliang/rustdemoapp 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/rongfengliang/rustdemoapp [INFO] finished tweaking git repo https://github.com/rongfengliang/rustdemoapp [INFO] tweaked toml for git repo https://github.com/rongfengliang/rustdemoapp written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/rongfengliang/rustdemoapp 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 9d5c89d13928d7585f7f7f12e65e5bcd8410ef173b0934bff285b4da4b66bad6 [INFO] running `Command { std: "docker" "start" "-a" "9d5c89d13928d7585f7f7f12e65e5bcd8410ef173b0934bff285b4da4b66bad6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9d5c89d13928d7585f7f7f12e65e5bcd8410ef173b0934bff285b4da4b66bad6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9d5c89d13928d7585f7f7f12e65e5bcd8410ef173b0934bff285b4da4b66bad6", kill_on_drop: false }` [INFO] [stdout] 9d5c89d13928d7585f7f7f12e65e5bcd8410ef173b0934bff285b4da4b66bad6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 878be21eff12aa19f014a68c4fb8faf1bd0a60f4a4177c4b3d00f6d55efe636e [INFO] running `Command { std: "docker" "start" "-a" "878be21eff12aa19f014a68c4fb8faf1bd0a60f4a4177c4b3d00f6d55efe636e", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.36 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling unicode-xid v0.0.4 [INFO] [stderr] Compiling quote v0.3.15 [INFO] [stderr] Checking lazy_static v1.0.0 [INFO] [stderr] Checking num-traits v0.2.0 [INFO] [stderr] Compiling pest v1.0.3 [INFO] [stderr] Checking cfg-if v0.1.2 [INFO] [stderr] Checking regex-syntax v0.4.2 [INFO] [stderr] Checking serde v1.0.27 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Compiling synom v0.11.3 [INFO] [stderr] Checking thread_local v0.3.5 [INFO] [stderr] Compiling syn v0.11.11 [INFO] [stderr] Checking itoa v0.3.4 [INFO] [stderr] Checking dtoa v0.4.2 [INFO] [stderr] Checking utf8-ranges v1.0.0 [INFO] [stderr] Checking log v0.4.1 [INFO] [stderr] Checking memchr v2.0.1 [INFO] [stderr] Checking quick-error v1.2.1 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking aho-corasick v0.6.4 [INFO] [stderr] Checking regex v0.2.6 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-0.2.6/src/exec.rs:742:13 [INFO] [stdout] | [INFO] [stdout] 742 | / match dfa::Fsm::reverse( [INFO] [stdout] 743 | | &self.ro.dfa_reverse, [INFO] [stdout] 744 | | self.cache, [INFO] [stdout] 745 | | false, [INFO] [stdout] ... | [INFO] [stdout] 752 | | Quit => return Some(Quit), [INFO] [stdout] 753 | | }; [INFO] [stdout] | |_____________^ cannot infer type [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling pest_derive v1.0.3 [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" "878be21eff12aa19f014a68c4fb8faf1bd0a60f4a4177c4b3d00f6d55efe636e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "878be21eff12aa19f014a68c4fb8faf1bd0a60f4a4177c4b3d00f6d55efe636e", kill_on_drop: false }` [INFO] [stdout] 878be21eff12aa19f014a68c4fb8faf1bd0a60f4a4177c4b3d00f6d55efe636e