[INFO] fetching crate woojin 0.1.5...
[INFO] checking woojin-0.1.5 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate woojin 0.1.5 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate woojin 0.1.5 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate woojin 0.1.5
[INFO] finished tweaking crates.io crate woojin 0.1.5
[INFO] tweaked toml for crates.io crate woojin 0.1.5 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate woojin 0.1.5 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v1.0.1
[INFO] [stderr]   Downloaded regex v1.8.1
[INFO] [stderr]   Downloaded regex-syntax v0.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a25656f04a68b310c63b05c82b3dab0d373fa42bc3478a297910b0b088253668
[INFO] running `Command { std: "docker" "start" "-a" "a25656f04a68b310c63b05c82b3dab0d373fa42bc3478a297910b0b088253668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a25656f04a68b310c63b05c82b3dab0d373fa42bc3478a297910b0b088253668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a25656f04a68b310c63b05c82b3dab0d373fa42bc3478a297910b0b088253668", kill_on_drop: false }`
[INFO] [stdout] a25656f04a68b310c63b05c82b3dab0d373fa42bc3478a297910b0b088253668
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41537806b8695ac05f5a28bfa81ce9608cc0837697b94b406bb4799ec2f06267
[INFO] running `Command { std: "docker" "start" "-a" "41537806b8695ac05f5a28bfa81ce9608cc0837697b94b406bb4799ec2f06267", kill_on_drop: false }`
[INFO] [stderr]     Checking aho-corasick v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.7.1
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking regex v1.8.1
[INFO] [stderr]     Checking woojin v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `ToWoojinValue` is never used
[INFO] [stdout]  --> src/types/mod.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub(crate) trait ToWoojinValue {
[INFO] [stdout]   |                  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/ast.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Comment(String),
[INFO] [stdout]   |   ------- ^^^^^^
[INFO] [stdout]   |   |
[INFO] [stdout]   |   field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Comment(()),
[INFO] [stdout]   |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ToWoojinValue` is never used
[INFO] [stdout]  --> src/types/mod.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub(crate) trait ToWoojinValue {
[INFO] [stdout]   |                  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/ast.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Comment(String),
[INFO] [stdout]   |   ------- ^^^^^^
[INFO] [stdout]   |   |
[INFO] [stdout]   |   field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Comment(()),
[INFO] [stdout]   |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.57s
[INFO] running `Command { std: "docker" "inspect" "41537806b8695ac05f5a28bfa81ce9608cc0837697b94b406bb4799ec2f06267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41537806b8695ac05f5a28bfa81ce9608cc0837697b94b406bb4799ec2f06267", kill_on_drop: false }`
[INFO] [stdout] 41537806b8695ac05f5a28bfa81ce9608cc0837697b94b406bb4799ec2f06267