[INFO] cloning repository https://github.com/seanchen1991/AvlTreeSet [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/seanchen1991/AvlTreeSet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanchen1991%2FAvlTreeSet", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanchen1991%2FAvlTreeSet'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4cf7a8f1dfd355bc6ebeba06dca1c66e165e7b4a [INFO] checking seanchen1991/AvlTreeSet against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanchen1991%2FAvlTreeSet" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/seanchen1991/AvlTreeSet 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/seanchen1991/AvlTreeSet [INFO] finished tweaking git repo https://github.com/seanchen1991/AvlTreeSet [INFO] tweaked toml for git repo https://github.com/seanchen1991/AvlTreeSet written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/seanchen1991/AvlTreeSet 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 quickcheck_macros v0.9.1 [INFO] [stderr] Downloaded quickcheck v0.9.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f7ea6c6ccf8dc3b174bd6d14a928f02e8ffa19ed61e693a69de40ff44ffecbbc [INFO] running `Command { std: "docker" "start" "-a" "f7ea6c6ccf8dc3b174bd6d14a928f02e8ffa19ed61e693a69de40ff44ffecbbc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f7ea6c6ccf8dc3b174bd6d14a928f02e8ffa19ed61e693a69de40ff44ffecbbc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f7ea6c6ccf8dc3b174bd6d14a928f02e8ffa19ed61e693a69de40ff44ffecbbc", kill_on_drop: false }` [INFO] [stdout] f7ea6c6ccf8dc3b174bd6d14a928f02e8ffa19ed61e693a69de40ff44ffecbbc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] b8e4defe0a5fa0c117dc34eb0246e98226574e9c0f05db88a0311a93dac66bbd [INFO] running `Command { std: "docker" "start" "-a" "b8e4defe0a5fa0c117dc34eb0246e98226574e9c0f05db88a0311a93dac66bbd", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.72 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling proc-macro2 v1.0.18 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling syn v1.0.34 [INFO] [stderr] Checking regex-syntax v0.6.18 [INFO] [stderr] Checking ppv-lite86 v0.2.8 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Checking avl-tree-set v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Ord` is imported redundantly [INFO] [stdout] --> src/lib.rs:9:16 [INFO] [stdout] | [INFO] [stdout] 9 | use std::cmp::{Ord, Ordering}; [INFO] [stdout] | ^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Ord` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `AvlTreeSetIter` is never constructed [INFO] [stdout] --> src/lib.rs:27:8 [INFO] [stdout] | [INFO] [stdout] 27 | struct AvlTreeSetIter<'a, T: Ord> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `iter` is never used [INFO] [stdout] --> src/lib.rs:202:8 [INFO] [stdout] | [INFO] [stdout] 201 | impl<'a, T: 'a + Ord> AvlTreeSet { [INFO] [stdout] | ----------------------------------- method in this implementation [INFO] [stdout] 202 | fn iter(&'a self) -> AvlTreeSetIter<'a, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking aho-corasick v0.7.13 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking regex v1.3.9 [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stderr] Checking quickcheck v0.9.2 [INFO] [stderr] Compiling quickcheck_macros v0.9.1 [INFO] [stdout] warning: the item `Ord` is imported redundantly [INFO] [stdout] --> src/lib.rs:9:16 [INFO] [stdout] | [INFO] [stdout] 9 | use std::cmp::{Ord, Ordering}; [INFO] [stdout] | ^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Ord` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.85s [INFO] running `Command { std: "docker" "inspect" "b8e4defe0a5fa0c117dc34eb0246e98226574e9c0f05db88a0311a93dac66bbd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b8e4defe0a5fa0c117dc34eb0246e98226574e9c0f05db88a0311a93dac66bbd", kill_on_drop: false }` [INFO] [stdout] b8e4defe0a5fa0c117dc34eb0246e98226574e9c0f05db88a0311a93dac66bbd [INFO] checking seanchen1991/AvlTreeSet against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanchen1991%2FAvlTreeSet" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/seanchen1991/AvlTreeSet 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/seanchen1991/AvlTreeSet [INFO] finished tweaking git repo https://github.com/seanchen1991/AvlTreeSet [INFO] tweaked toml for git repo https://github.com/seanchen1991/AvlTreeSet written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/seanchen1991/AvlTreeSet 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 86bdfbb98b09ed9afe4f3d5dd7ee7b4ff298ba2fcaf7e6419cd45d7bf5d28581 [INFO] running `Command { std: "docker" "start" "-a" "86bdfbb98b09ed9afe4f3d5dd7ee7b4ff298ba2fcaf7e6419cd45d7bf5d28581", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "86bdfbb98b09ed9afe4f3d5dd7ee7b4ff298ba2fcaf7e6419cd45d7bf5d28581", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "86bdfbb98b09ed9afe4f3d5dd7ee7b4ff298ba2fcaf7e6419cd45d7bf5d28581", kill_on_drop: false }` [INFO] [stdout] 86bdfbb98b09ed9afe4f3d5dd7ee7b4ff298ba2fcaf7e6419cd45d7bf5d28581 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 59cd1e522428caaf55a5d36eacd7849112803f570d050a661fee3eee984d1a28 [INFO] running `Command { std: "docker" "start" "-a" "59cd1e522428caaf55a5d36eacd7849112803f570d050a661fee3eee984d1a28", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.72 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling proc-macro2 v1.0.18 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking regex-syntax v0.6.18 [INFO] [stderr] Checking ppv-lite86 v0.2.8 [INFO] [stderr] Compiling syn v1.0.34 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Checking avl-tree-set v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Ord` is imported redundantly [INFO] [stdout] --> src/lib.rs:9:16 [INFO] [stdout] | [INFO] [stdout] 9 | use std::cmp::{Ord, Ordering}; [INFO] [stdout] | ^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Ord` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stdout] warning: struct `AvlTreeSetIter` is never constructed [INFO] [stdout] --> src/lib.rs:27:8 [INFO] [stdout] | [INFO] [stdout] 27 | struct AvlTreeSetIter<'a, T: Ord> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `iter` is never used [INFO] [stdout] --> src/lib.rs:202:8 [INFO] [stdout] | [INFO] [stdout] 201 | impl<'a, T: 'a + Ord> AvlTreeSet { [INFO] [stdout] | ----------------------------------- method in this implementation [INFO] [stdout] 202 | fn iter(&'a self) -> AvlTreeSetIter<'a, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking aho-corasick v0.7.13 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking regex v1.3.9 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.3.9/src/exec.rs:836:13 [INFO] [stdout] | [INFO] [stdout] 836 | / match dfa::Fsm::reverse( [INFO] [stdout] 837 | | &self.ro.dfa_reverse, [INFO] [stdout] 838 | | self.cache.value(), [INFO] [stdout] 839 | | false, [INFO] [stdout] ... | [INFO] [stdout] 850 | | Quit => return Some(Quit), [INFO] [stdout] 851 | | }; [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" "59cd1e522428caaf55a5d36eacd7849112803f570d050a661fee3eee984d1a28", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "59cd1e522428caaf55a5d36eacd7849112803f570d050a661fee3eee984d1a28", kill_on_drop: false }` [INFO] [stdout] 59cd1e522428caaf55a5d36eacd7849112803f570d050a661fee3eee984d1a28