[INFO] cloning repository https://github.com/shunmasa/pattern
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shunmasa/pattern" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunmasa%2Fpattern", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunmasa%2Fpattern'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 87a4c54858970ca976f4720b5d479a268d01a7eb
[INFO] checking shunmasa/pattern against try#0bdee9e879c87b7211d316e9152109cfd46c576b for pr-150097
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunmasa%2Fpattern" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/shunmasa/pattern
[INFO] finished tweaking git repo https://github.com/shunmasa/pattern
[INFO] tweaked toml for git repo https://github.com/shunmasa/pattern written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/shunmasa/pattern on toolchain 0bdee9e879c87b7211d316e9152109cfd46c576b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/shunmasa/pattern 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" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcd408c1ba8fed3376f5eb74c42680c0f42a55812cadfa9dd3ac331866442b0a
[INFO] running `Command { std: "docker" "start" "-a" "dcd408c1ba8fed3376f5eb74c42680c0f42a55812cadfa9dd3ac331866442b0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcd408c1ba8fed3376f5eb74c42680c0f42a55812cadfa9dd3ac331866442b0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcd408c1ba8fed3376f5eb74c42680c0f42a55812cadfa9dd3ac331866442b0a", kill_on_drop: false }`
[INFO] [stdout] dcd408c1ba8fed3376f5eb74c42680c0f42a55812cadfa9dd3ac331866442b0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 410e5af0cb1dbbc6b9a9cab2213181ef55d8176db204a4c1b6ad86d4e0bdf487
[INFO] running `Command { std: "docker" "start" "-a" "410e5af0cb1dbbc6b9a9cab2213181ef55d8176db204a4c1b6ad86d4e0bdf487", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]     Checking serde_json v1.0.113
[INFO] [stderr]     Checking type-pattern v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Weak`
[INFO] [stdout]  --> src/main.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::{Rc, Weak};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Weak`
[INFO] [stdout]  --> src/main.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::{Rc, Weak};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidText` is never constructed
[INFO] [stdout]    --> src/main.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout]  97 | enum ComplexDataParseError {
[INFO] [stdout]     |      --------------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 100 |     InvalidText,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ComplexDataParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `increment_shared_counter` is never used
[INFO] [stdout]    --> src/main.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | trait DataProcessor {
[INFO] [stdout]     |       ------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 129 |     fn increment_shared_counter(&self);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidText` is never constructed
[INFO] [stdout]    --> src/main.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout]  97 | enum ComplexDataParseError {
[INFO] [stdout]     |      --------------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 100 |     InvalidText,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ComplexDataParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `increment_shared_counter` is never used
[INFO] [stdout]    --> src/main.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | trait DataProcessor {
[INFO] [stdout]     |       ------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 129 |     fn increment_shared_counter(&self);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.66s
[INFO] running `Command { std: "docker" "inspect" "410e5af0cb1dbbc6b9a9cab2213181ef55d8176db204a4c1b6ad86d4e0bdf487", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "410e5af0cb1dbbc6b9a9cab2213181ef55d8176db204a4c1b6ad86d4e0bdf487", kill_on_drop: false }`
[INFO] [stdout] 410e5af0cb1dbbc6b9a9cab2213181ef55d8176db204a4c1b6ad86d4e0bdf487