[INFO] fetching crate kevlar 0.1.2...
[INFO] checking kevlar-0.1.2 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate kevlar 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate kevlar 0.1.2 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kevlar 0.1.2
[INFO] finished tweaking crates.io crate kevlar 0.1.2
[INFO] tweaked toml for crates.io crate kevlar 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 47 packages to latest compatible versions
[INFO] [stderr]       Adding fern v0.5.9 (available: v0.6.2)
[INFO] [stderr]       Adding windows-core v0.52.0 (available: v0.58.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df4432b7412031ac0343c2521f806284ca9dcacef5ccd49242bfe68d13db673e
[INFO] running `Command { std: "docker" "start" "-a" "df4432b7412031ac0343c2521f806284ca9dcacef5ccd49242bfe68d13db673e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df4432b7412031ac0343c2521f806284ca9dcacef5ccd49242bfe68d13db673e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df4432b7412031ac0343c2521f806284ca9dcacef5ccd49242bfe68d13db673e", kill_on_drop: false }`
[INFO] [stdout] df4432b7412031ac0343c2521f806284ca9dcacef5ccd49242bfe68d13db673e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8552d2b891ce13fcd48fff36049ca171455330304211676594ecdb9b9d559d2c
[INFO] running `Command { std: "docker" "start" "-a" "8552d2b891ce13fcd48fff36049ca171455330304211676594ecdb9b9d559d2c", kill_on_drop: false }`
[INFO] [stderr]     Checking fern v0.5.9
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]     Checking kevlar v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `filename` and `label` are never read
[INFO] [stdout]   --> src/testresult.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct TestArtifact {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 60 |     filename: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 61 |     artifact_type: TestArtifactType,
[INFO] [stdout] 62 |     label: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestArtifact` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]    --> src/testresult.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 187 | pub struct TestRecord {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 188 |     name: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TestRecord` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `filename` and `label` are never read
[INFO] [stdout]   --> src/testresult.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct TestArtifact {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 60 |     filename: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 61 |     artifact_type: TestArtifactType,
[INFO] [stdout] 62 |     label: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestArtifact` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]    --> src/testresult.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 187 | pub struct TestRecord {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 188 |     name: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TestRecord` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "8552d2b891ce13fcd48fff36049ca171455330304211676594ecdb9b9d559d2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8552d2b891ce13fcd48fff36049ca171455330304211676594ecdb9b9d559d2c", kill_on_drop: false }`
[INFO] [stdout] 8552d2b891ce13fcd48fff36049ca171455330304211676594ecdb9b9d559d2c