[INFO] fetching crate magnetar_core 0.1.0...
[INFO] checking magnetar_core-0.1.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate magnetar_core 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate magnetar_core 0.1.0 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 magnetar_core 0.1.0
[INFO] finished tweaking crates.io crate magnetar_core 0.1.0
[INFO] tweaked toml for crates.io crate magnetar_core 0.1.0 written to /workspace/builds/worker-2-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 18 packages to latest compatible versions
[INFO] [stderr]       Adding idna v0.5.0 (available: v1.0.2)
[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-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f231f76c4d3cc410aef35b9eab0c40cca2b126594879963dd98cca8aa1b0b3e
[INFO] running `Command { std: "docker" "start" "-a" "7f231f76c4d3cc410aef35b9eab0c40cca2b126594879963dd98cca8aa1b0b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f231f76c4d3cc410aef35b9eab0c40cca2b126594879963dd98cca8aa1b0b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f231f76c4d3cc410aef35b9eab0c40cca2b126594879963dd98cca8aa1b0b3e", kill_on_drop: false }`
[INFO] [stdout] 7f231f76c4d3cc410aef35b9eab0c40cca2b126594879963dd98cca8aa1b0b3e
[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 -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] 827ab7e5fd0b60e48d7230d785821649f67dcddc6adf22a92b4e59455a4dd4ae
[INFO] running `Command { std: "docker" "start" "-a" "827ab7e5fd0b60e48d7230d785821649f67dcddc6adf22a92b4e59455a4dd4ae", kill_on_drop: false }`
[INFO] [stderr]     Checking serde v1.0.210
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]     Checking magnetar_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `ContentType` is never used
[INFO] [stdout]   --> src/web_model/mod.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait ContentType: Serialize {
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Rel` is never used
[INFO] [stdout]    --> src/web_model/mod.rs:104:7
[INFO] [stdout]     |
[INFO] [stdout] 104 | trait Rel: Serialize {
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ContentType` is never used
[INFO] [stdout]   --> src/web_model/mod.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait ContentType: Serialize {
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Rel` is never used
[INFO] [stdout]    --> src/web_model/mod.rs:104:7
[INFO] [stdout]     |
[INFO] [stdout] 104 | trait Rel: Serialize {
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.10s
[INFO] running `Command { std: "docker" "inspect" "827ab7e5fd0b60e48d7230d785821649f67dcddc6adf22a92b4e59455a4dd4ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "827ab7e5fd0b60e48d7230d785821649f67dcddc6adf22a92b4e59455a4dd4ae", kill_on_drop: false }`
[INFO] [stdout] 827ab7e5fd0b60e48d7230d785821649f67dcddc6adf22a92b4e59455a4dd4ae