[INFO] fetching crate lrlex 0.13.3...
[INFO] checking lrlex-0.13.3 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate lrlex 0.13.3 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate lrlex 0.13.3 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 lrlex 0.13.3
[INFO] finished tweaking crates.io crate lrlex 0.13.3
[INFO] tweaked toml for crates.io crate lrlex 0.13.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate lrlex 0.13.3 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 lrpar v0.13.3
[INFO] [stderr]   Downloaded lrtable v0.13.3
[INFO] [stderr]   Downloaded sparsevec v0.2.0
[INFO] [stderr]   Downloaded vob v3.0.2
[INFO] [stderr]   Downloaded vergen v8.2.4
[INFO] [stderr]   Downloaded cactus v1.0.6
[INFO] [stderr]   Downloaded cfgrammar v0.13.3
[INFO] [stderr]   Downloaded packedvec v1.2.4
[INFO] [stderr]   Downloaded deranged v0.3.6
[INFO] [stderr]   Downloaded time-macros v0.2.11
[INFO] [stderr]   Downloaded pest v2.7.1
[INFO] [stderr]   Downloaded time v0.3.24
[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] 375a3c2de56de007cb35518e52241e950aae960b65694472df01c4396d505447
[INFO] running `Command { std: "docker" "start" "-a" "375a3c2de56de007cb35518e52241e950aae960b65694472df01c4396d505447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "375a3c2de56de007cb35518e52241e950aae960b65694472df01c4396d505447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "375a3c2de56de007cb35518e52241e950aae960b65694472df01c4396d505447", kill_on_drop: false }`
[INFO] [stdout] 375a3c2de56de007cb35518e52241e950aae960b65694472df01c4396d505447
[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] 002c2fd8ff831caad29a0d07f75eed005e23ebc9ce92de4357782bdcb5891271
[INFO] running `Command { std: "docker" "start" "-a" "002c2fd8ff831caad29a0d07f75eed005e23ebc9ce92de4357782bdcb5891271", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling thiserror v1.0.44
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling serde v1.0.180
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.180
[INFO] [stderr]    Compiling anyhow v1.0.72
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling itoa v1.0.9
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling time-core v0.1.1
[INFO] [stderr]    Compiling deranged v0.3.6
[INFO] [stderr]    Compiling num_threads v0.1.6
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]    Compiling vergen v8.2.4
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]    Compiling time v0.3.24
[INFO] [stderr]     Checking indexmap v2.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking cactus v1.0.6
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking filetime v0.2.21
[INFO] [stderr]     Checking regex-automata v0.3.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.44
[INFO] [stderr]     Checking packedvec v1.2.4
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]    Compiling lrpar v0.13.3
[INFO] [stderr]    Compiling lrlex v0.13.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling pest v2.7.1
[INFO] [stderr]     Checking regex v1.9.1
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling vob v3.0.2
[INFO] [stderr]     Checking sparsevec v0.2.0
[INFO] [stderr]     Checking cfgrammar v0.13.3
[INFO] [stderr]     Checking lrtable v0.13.3
[INFO] [stdout] warning: the item `AsRef` is imported redundantly
[INFO] [stdout]  --> src/lib/ctbuilder.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     convert::AsRef,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `AsRef` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `regex` is imported redundantly
[INFO] [stdout]   --> src/lib/lexer.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 | use regex::{self, Regex, RegexBuilder};
[INFO] [stdout]    |             ^^^^ the item `regex` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsRef` is imported redundantly
[INFO] [stdout]  --> src/lib/ctbuilder.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     convert::AsRef,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `AsRef` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `regex` is imported redundantly
[INFO] [stdout]   --> src/lib/lexer.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 | use regex::{self, Regex, RegexBuilder};
[INFO] [stdout]    |             ^^^^ the item `regex` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `HashMap` is imported redundantly
[INFO] [stdout]    --> src/lib/lexer.rs:553:9
[INFO] [stdout]     |
[INFO] [stdout] 550 |     use super::*;
[INFO] [stdout]     |         -------- the item `HashMap` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 553 |     use std::collections::HashMap;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `line_of_offset` is never used
[INFO] [stdout]    --> src/lib/parser.rs:666:8
[INFO] [stdout]     |
[INFO] [stdout] 666 |     fn line_of_offset(s: &str, off: usize) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `expect_error_at_line` is never used
[INFO] [stdout]    --> src/lib/parser.rs:671:12
[INFO] [stdout]     |
[INFO] [stdout] 670 |     trait ErrorsHelper {
[INFO] [stdout]     |           ------------ method in this trait
[INFO] [stdout] 671 |         fn expect_error_at_line(self, src: &str, kind: LexErrorKind, line: usize);
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.08s
[INFO] running `Command { std: "docker" "inspect" "002c2fd8ff831caad29a0d07f75eed005e23ebc9ce92de4357782bdcb5891271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "002c2fd8ff831caad29a0d07f75eed005e23ebc9ce92de4357782bdcb5891271", kill_on_drop: false }`
[INFO] [stdout] 002c2fd8ff831caad29a0d07f75eed005e23ebc9ce92de4357782bdcb5891271
[INFO] checking lrlex-0.13.3 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate lrlex 0.13.3 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate lrlex 0.13.3 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 lrlex 0.13.3
[INFO] finished tweaking crates.io crate lrlex 0.13.3
[INFO] tweaked toml for crates.io crate lrlex 0.13.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate lrlex 0.13.3 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-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] 999b7f6b882e0104cb7f7fb1f91b1730ca5424426e38b264eba22e43ace28ba8
[INFO] running `Command { std: "docker" "start" "-a" "999b7f6b882e0104cb7f7fb1f91b1730ca5424426e38b264eba22e43ace28ba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "999b7f6b882e0104cb7f7fb1f91b1730ca5424426e38b264eba22e43ace28ba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "999b7f6b882e0104cb7f7fb1f91b1730ca5424426e38b264eba22e43ace28ba8", kill_on_drop: false }`
[INFO] [stdout] 999b7f6b882e0104cb7f7fb1f91b1730ca5424426e38b264eba22e43ace28ba8
[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] 15cd6bbbede7a21ed952b3ac2ef72997e4aaeb1e4da7d93c9b6935670cba0c26
[INFO] running `Command { std: "docker" "start" "-a" "15cd6bbbede7a21ed952b3ac2ef72997e4aaeb1e4da7d93c9b6935670cba0c26", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling thiserror v1.0.44
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde v1.0.180
[INFO] [stderr]    Compiling anyhow v1.0.72
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.180
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling deranged v0.3.6
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/serde_derive-1.0.180/src/lib_precompiled.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         panic!();
[INFO] [stdout]    |         ^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[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 `serde_derive` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "15cd6bbbede7a21ed952b3ac2ef72997e4aaeb1e4da7d93c9b6935670cba0c26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15cd6bbbede7a21ed952b3ac2ef72997e4aaeb1e4da7d93c9b6935670cba0c26", kill_on_drop: false }`
[INFO] [stdout] 15cd6bbbede7a21ed952b3ac2ef72997e4aaeb1e4da7d93c9b6935670cba0c26