[INFO] fetching crate thurgood 0.2.1...
[INFO] checking thurgood-0.2.1 against master#a3f76a26e045a760bb1163b7eab36872985242d5 for pr-130930
[INFO] extracting crate thurgood 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate thurgood 0.2.1 on toolchain a3f76a26e045a760bb1163b7eab36872985242d5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate thurgood 0.2.1
[INFO] finished tweaking crates.io crate thurgood 0.2.1
[INFO] tweaked toml for crates.io crate thurgood 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.13.1 (available: v0.22.1)
[INFO] [stderr]       Adding hashbrown v0.12.3 (available: v0.14.5)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.5.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c9dac8d74a7408a1572fbe97922f7214bc32dbfaf9b3749cd678cb06daf0422
[INFO] running `Command { std: "docker" "start" "-a" "8c9dac8d74a7408a1572fbe97922f7214bc32dbfaf9b3749cd678cb06daf0422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c9dac8d74a7408a1572fbe97922f7214bc32dbfaf9b3749cd678cb06daf0422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c9dac8d74a7408a1572fbe97922f7214bc32dbfaf9b3749cd678cb06daf0422", kill_on_drop: false }`
[INFO] [stdout] 8c9dac8d74a7408a1572fbe97922f7214bc32dbfaf9b3749cd678cb06daf0422
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e1b655eb3328e9ade39caf3a84bcbe5b14cf142bd4bc678a590342641f0d3bd
[INFO] running `Command { std: "docker" "start" "-a" "7e1b655eb3328e9ade39caf3a84bcbe5b14cf142bd4bc678a590342641f0d3bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]     Checking thurgood v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `ezset` is never used
[INFO] [stdout]  --> src/rc/../inner/helper.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub trait JsonMapExt {
[INFO] [stdout]   |               ---------- method in this trait
[INFO] [stdout] 7 |         fn ezset<K, V>(&mut self, key: K, value: V) where K: AsRef<str>, V: Into<Value>;
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ezset` is never used
[INFO] [stdout]  --> src/arc/../inner/helper.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub trait JsonMapExt {
[INFO] [stdout]   |               ---------- method in this trait
[INFO] [stdout] 7 |         fn ezset<K, V>(&mut self, key: K, value: V) where K: AsRef<str>, V: Into<Value>;
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ezset` is never used
[INFO] [stdout]  --> src/rc/../inner/helper.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub trait JsonMapExt {
[INFO] [stdout]   |               ---------- method in this trait
[INFO] [stdout] 7 |         fn ezset<K, V>(&mut self, key: K, value: V) where K: AsRef<str>, V: Into<Value>;
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ezset` is never used
[INFO] [stdout]  --> src/arc/../inner/helper.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub trait JsonMapExt {
[INFO] [stdout]   |               ---------- method in this trait
[INFO] [stdout] 7 |         fn ezset<K, V>(&mut self, key: K, value: V) where K: AsRef<str>, V: Into<Value>;
[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 7.41s
[INFO] running `Command { std: "docker" "inspect" "7e1b655eb3328e9ade39caf3a84bcbe5b14cf142bd4bc678a590342641f0d3bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e1b655eb3328e9ade39caf3a84bcbe5b14cf142bd4bc678a590342641f0d3bd", kill_on_drop: false }`
[INFO] [stdout] 7e1b655eb3328e9ade39caf3a84bcbe5b14cf142bd4bc678a590342641f0d3bd