[INFO] fetching crate zjson 0.1.5...
[INFO] checking zjson-0.1.5 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate zjson 0.1.5 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate zjson 0.1.5 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zjson 0.1.5
[INFO] finished tweaking crates.io crate zjson 0.1.5
[INFO] tweaked toml for crates.io crate zjson 0.1.5 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate zjson 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 625cbb7e8303f5ae8220564ced9ea82b0d610322c77cf934a0f6e0d2e57fbcf0
[INFO] running `Command { std: "docker" "start" "-a" "625cbb7e8303f5ae8220564ced9ea82b0d610322c77cf934a0f6e0d2e57fbcf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "625cbb7e8303f5ae8220564ced9ea82b0d610322c77cf934a0f6e0d2e57fbcf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "625cbb7e8303f5ae8220564ced9ea82b0d610322c77cf934a0f6e0d2e57fbcf0", kill_on_drop: false }`
[INFO] [stdout] 625cbb7e8303f5ae8220564ced9ea82b0d610322c77cf934a0f6e0d2e57fbcf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail_expr_drop_order" "-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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6469a9485fa2d0cf82e52a63b4a5f7a5b70de5b514be5440be68b8b213a1b8f
[INFO] running `Command { std: "docker" "start" "-a" "f6469a9485fa2d0cf82e52a63b4a5f7a5b70de5b514be5440be68b8b213a1b8f", kill_on_drop: false }`
[INFO] [stderr]     Checking zjson v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `number` and `literal` are never used
[INFO] [stdout]   --> lib/test_parent.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<'json> TestParent<'json> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn number(&mut self) -> Number<'json, '_> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn literal(&mut self) -> Literal<'json, '_> {
[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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "f6469a9485fa2d0cf82e52a63b4a5f7a5b70de5b514be5440be68b8b213a1b8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6469a9485fa2d0cf82e52a63b4a5f7a5b70de5b514be5440be68b8b213a1b8f", kill_on_drop: false }`
[INFO] [stdout] f6469a9485fa2d0cf82e52a63b4a5f7a5b70de5b514be5440be68b8b213a1b8f