[INFO] fetching crate slabmalloc 0.11.0... [INFO] checking slabmalloc-0.11.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate slabmalloc 0.11.0 into /workspace/builds/worker-0-tc1/source [INFO] validating manifest of crates.io crate slabmalloc 0.11.0 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 slabmalloc 0.11.0 [INFO] finished tweaking crates.io crate slabmalloc 0.11.0 [INFO] tweaked toml for crates.io crate slabmalloc 0.11.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate crates.io crate slabmalloc 0.11.0 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] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded spin v0.9.0 [INFO] [stderr] Downloaded libc v0.2.95 [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] f426f6c9d0348ac6874cd70a8543fecc4b7525c6958b3c5a19136639222458c0 [INFO] running `Command { std: "docker" "start" "-a" "f426f6c9d0348ac6874cd70a8543fecc4b7525c6958b3c5a19136639222458c0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f426f6c9d0348ac6874cd70a8543fecc4b7525c6958b3c5a19136639222458c0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f426f6c9d0348ac6874cd70a8543fecc4b7525c6958b3c5a19136639222458c0", kill_on_drop: false }` [INFO] [stdout] f426f6c9d0348ac6874cd70a8543fecc4b7525c6958b3c5a19136639222458c0 [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] 9292a2675993c09580d75c8101be7e8c604b9edfec8286fcad15a0733e649ac8 [INFO] running `Command { std: "docker" "start" "-a" "9292a2675993c09580d75c8101be7e8c604b9edfec8286fcad15a0733e649ac8", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.95 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking lock_api v0.4.4 [INFO] [stderr] Checking spin v0.9.0 [INFO] [stderr] Checking slabmalloc v0.11.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking rand_core v0.6.2 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Checking env_logger v0.9.0 [INFO] [stdout] warning: the feature `prelude_import` is internal to the compiler or standard library [INFO] [stdout] --> src/lib.rs:22:27 [INFO] [stdout] | [INFO] [stdout] 22 | #![cfg_attr(test, feature(prelude_import, test, c_void_variant, core_intrinsics))] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] = note: `#[warn(internal_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library [INFO] [stdout] --> src/lib.rs:22:65 [INFO] [stdout] | [INFO] [stdout] 22 | #![cfg_attr(test, feature(prelude_import, test, c_void_variant, core_intrinsics))] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `env_logger` is imported redundantly [INFO] [stdout] --> src/tests.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use env_logger; [INFO] [stdout] | ^^^^^^^^^^ the item `env_logger` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/tests.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use rand; [INFO] [stdout] | ^^^^ the item `rand` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Layout` is imported redundantly [INFO] [stdout] --> src/tests.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::alloc::Layout; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 9 | use crate::*; [INFO] [stdout] | -------- the item `Layout` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.38s [INFO] running `Command { std: "docker" "inspect" "9292a2675993c09580d75c8101be7e8c604b9edfec8286fcad15a0733e649ac8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9292a2675993c09580d75c8101be7e8c604b9edfec8286fcad15a0733e649ac8", kill_on_drop: false }` [INFO] [stdout] 9292a2675993c09580d75c8101be7e8c604b9edfec8286fcad15a0733e649ac8 [INFO] checking slabmalloc-0.11.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate slabmalloc 0.11.0 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate slabmalloc 0.11.0 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 slabmalloc 0.11.0 [INFO] finished tweaking crates.io crate slabmalloc 0.11.0 [INFO] tweaked toml for crates.io crate slabmalloc 0.11.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate crates.io crate slabmalloc 0.11.0 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] [stderr] Blocking waiting for file lock on package cache [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] 496a6fa358a27d098c151c50c8334489a2f43f730af668f94d57ab3b275c3904 [INFO] running `Command { std: "docker" "start" "-a" "496a6fa358a27d098c151c50c8334489a2f43f730af668f94d57ab3b275c3904", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "496a6fa358a27d098c151c50c8334489a2f43f730af668f94d57ab3b275c3904", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "496a6fa358a27d098c151c50c8334489a2f43f730af668f94d57ab3b275c3904", kill_on_drop: false }` [INFO] [stdout] 496a6fa358a27d098c151c50c8334489a2f43f730af668f94d57ab3b275c3904 [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] ca7baf951b6221b3dec4b5c65f9d3d4e824cf9fdfd6973717a54a6474139d5b0 [INFO] running `Command { std: "docker" "start" "-a" "ca7baf951b6221b3dec4b5c65f9d3d4e824cf9fdfd6973717a54a6474139d5b0", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.95 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking humantime v2.1.0 [INFO] [stderr] Checking lock_api v0.4.4 [INFO] [stderr] Checking spin v0.9.0 [INFO] [stderr] Checking slabmalloc v0.11.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking rand_core v0.6.2 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.5.4/src/exec.rs:848:13 [INFO] [stdout] | [INFO] [stdout] 848 | / match dfa::Fsm::reverse( [INFO] [stdout] 849 | | &self.ro.dfa_reverse, [INFO] [stdout] 850 | | self.cache.value(), [INFO] [stdout] 851 | | false, [INFO] [stdout] ... | [INFO] [stdout] 862 | | Quit => return Some(Quit), [INFO] [stdout] 863 | | }; [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] running `Command { std: "docker" "inspect" "ca7baf951b6221b3dec4b5c65f9d3d4e824cf9fdfd6973717a54a6474139d5b0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ca7baf951b6221b3dec4b5c65f9d3d4e824cf9fdfd6973717a54a6474139d5b0", kill_on_drop: false }` [INFO] [stdout] ca7baf951b6221b3dec4b5c65f9d3d4e824cf9fdfd6973717a54a6474139d5b0