[INFO] fetching crate lz_diet 0.1.6... [INFO] checking lz_diet-0.1.6 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate lz_diet 0.1.6 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate lz_diet 0.1.6 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 lz_diet 0.1.6 [INFO] finished tweaking crates.io crate lz_diet 0.1.6 [INFO] tweaked toml for crates.io crate lz_diet 0.1.6 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate crates.io crate lz_diet 0.1.6 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 env_logger v0.6.1 [INFO] [stderr] Downloaded serde_derive v1.0.92 [INFO] [stderr] Downloaded autocfg v0.1.4 [INFO] [stderr] Downloaded wincolor v1.0.1 [INFO] [stderr] Downloaded num-bigint v0.2.2 [INFO] [stderr] Downloaded binary-tree v0.2.0 [INFO] [stderr] Downloaded aho-corasick v0.7.3 [INFO] [stderr] Downloaded syn v0.15.36 [INFO] [stderr] Downloaded chrono v0.4.6 [INFO] [stderr] Downloaded regex v1.1.7 [INFO] [stderr] Downloaded regex-syntax v0.6.7 [INFO] [stderr] Downloaded libc v0.2.58 [INFO] [stderr] Downloaded log v0.4.6 [INFO] [stderr] Downloaded extprim v1.7.0 [INFO] [stderr] Downloaded utf8-ranges v1.0.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a576899edd643806be9723dd3dff9c819b0189ebef4f06f96692f97b59d9ac4c [INFO] running `Command { std: "docker" "start" "-a" "a576899edd643806be9723dd3dff9c819b0189ebef4f06f96692f97b59d9ac4c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a576899edd643806be9723dd3dff9c819b0189ebef4f06f96692f97b59d9ac4c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a576899edd643806be9723dd3dff9c819b0189ebef4f06f96692f97b59d9ac4c", kill_on_drop: false }` [INFO] [stdout] a576899edd643806be9723dd3dff9c819b0189ebef4f06f96692f97b59d9ac4c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] e76588fd5099c54d0db493b4f6dd4bf1d35acef0b522ad63459773bff3a1a350 [INFO] running `Command { std: "docker" "start" "-a" "e76588fd5099c54d0db493b4f6dd4bf1d35acef0b522ad63459773bff3a1a350", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Compiling libc v0.2.58 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Compiling regex v1.1.7 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Checking utf8-ranges v1.0.3 [INFO] [stderr] Checking binary-tree v0.2.0 [INFO] [stderr] Checking termcolor v1.0.5 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking humantime v1.2.0 [INFO] [stderr] Checking regex-syntax v0.6.7 [INFO] [stderr] Checking lz_diet v0.1.6 (/opt/rustwide/workdir) [INFO] [stdout] warning: methods `insert_after`, `insert_max`, and `insert_min` are never used [INFO] [stdout] --> src/node_mut_ext.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 6 | pub(crate) trait NodeMutExt: NodeMut { [INFO] [stdout] | ---------- methods in this trait [INFO] [stdout] ... [INFO] [stdout] 10 | fn insert_after(&mut self, new_node: ::NodePtr, mut step_out: F) [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 31 | fn insert_max(&mut self, new_node: ::NodePtr, mut step_out: F) [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 50 | fn insert_min(&mut self, new_node: ::NodePtr, mut step_out: F) [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking aho-corasick v0.7.3 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking env_logger v0.6.1 [INFO] [stdout] warning: the item `Cow` is imported redundantly [INFO] [stdout] --> src/lib.rs:434:9 [INFO] [stdout] | [INFO] [stdout] 433 | use super::*; [INFO] [stdout] | -------- the item `Cow` is already imported here [INFO] [stdout] 434 | use std::borrow::Cow; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `insert_after`, `insert_max`, and `insert_min` are never used [INFO] [stdout] --> src/node_mut_ext.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 6 | pub(crate) trait NodeMutExt: NodeMut { [INFO] [stdout] | ---------- methods in this trait [INFO] [stdout] ... [INFO] [stdout] 10 | fn insert_after(&mut self, new_node: ::NodePtr, mut step_out: F) [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 31 | fn insert_max(&mut self, new_node: ::NodePtr, mut step_out: F) [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 50 | fn insert_min(&mut self, new_node: ::NodePtr, mut step_out: F) [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.97s [INFO] running `Command { std: "docker" "inspect" "e76588fd5099c54d0db493b4f6dd4bf1d35acef0b522ad63459773bff3a1a350", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e76588fd5099c54d0db493b4f6dd4bf1d35acef0b522ad63459773bff3a1a350", kill_on_drop: false }` [INFO] [stdout] e76588fd5099c54d0db493b4f6dd4bf1d35acef0b522ad63459773bff3a1a350 [INFO] checking lz_diet-0.1.6 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate lz_diet 0.1.6 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate lz_diet 0.1.6 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 lz_diet 0.1.6 [INFO] finished tweaking crates.io crate lz_diet 0.1.6 [INFO] tweaked toml for crates.io crate lz_diet 0.1.6 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate crates.io crate lz_diet 0.1.6 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 228ded0c8c6188a1195e1165673ff73ca06c1e5d74da75cba72e423e404e4270 [INFO] running `Command { std: "docker" "start" "-a" "228ded0c8c6188a1195e1165673ff73ca06c1e5d74da75cba72e423e404e4270", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "228ded0c8c6188a1195e1165673ff73ca06c1e5d74da75cba72e423e404e4270", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "228ded0c8c6188a1195e1165673ff73ca06c1e5d74da75cba72e423e404e4270", kill_on_drop: false }` [INFO] [stdout] 228ded0c8c6188a1195e1165673ff73ca06c1e5d74da75cba72e423e404e4270 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d4d1b0005a00c1287175dc02774de2e20697d75f80470946f62238c31c87319f [INFO] running `Command { std: "docker" "start" "-a" "d4d1b0005a00c1287175dc02774de2e20697d75f80470946f62238c31c87319f", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Compiling libc v0.2.58 [INFO] [stderr] Compiling regex v1.1.7 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Checking utf8-ranges v1.0.3 [INFO] [stderr] Checking binary-tree v0.2.0 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Checking termcolor v1.0.5 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking humantime v1.2.0 [INFO] [stderr] Checking regex-syntax v0.6.7 [INFO] [stderr] Checking lz_diet v0.1.6 (/opt/rustwide/workdir) [INFO] [stdout] warning: methods `insert_after`, `insert_max`, and `insert_min` are never used [INFO] [stdout] --> src/node_mut_ext.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 6 | pub(crate) trait NodeMutExt: NodeMut { [INFO] [stdout] | ---------- methods in this trait [INFO] [stdout] ... [INFO] [stdout] 10 | fn insert_after(&mut self, new_node: ::NodePtr, mut step_out: F) [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 31 | fn insert_max(&mut self, new_node: ::NodePtr, mut step_out: F) [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 50 | fn insert_min(&mut self, new_node: ::NodePtr, mut step_out: F) [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking aho-corasick v0.7.3 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.1.7/src/exec.rs:797:13 [INFO] [stdout] | [INFO] [stdout] 797 | / match dfa::Fsm::reverse( [INFO] [stdout] 798 | | &self.ro.dfa_reverse, [INFO] [stdout] 799 | | self.cache, [INFO] [stdout] 800 | | false, [INFO] [stdout] ... | [INFO] [stdout] 811 | | Quit => return Some(Quit), [INFO] [stdout] 812 | | }; [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" "d4d1b0005a00c1287175dc02774de2e20697d75f80470946f62238c31c87319f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d4d1b0005a00c1287175dc02774de2e20697d75f80470946f62238c31c87319f", kill_on_drop: false }` [INFO] [stdout] d4d1b0005a00c1287175dc02774de2e20697d75f80470946f62238c31c87319f