[INFO] cloning repository https://github.com/NotCraft/ArxivFeed
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NotCraft/ArxivFeed" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNotCraft%2FArxivFeed", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNotCraft%2FArxivFeed'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 666803907c51655b22dd541ef2cdc11e21309def
[INFO] checking NotCraft/ArxivFeed/666803907c51655b22dd541ef2cdc11e21309def against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNotCraft%2FArxivFeed" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NotCraft/ArxivFeed 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 git repo https://github.com/NotCraft/ArxivFeed
[INFO] finished tweaking git repo https://github.com/NotCraft/ArxivFeed
[INFO] tweaked toml for git repo https://github.com/NotCraft/ArxivFeed written to /workspace/builds/worker-5-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 }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 17d60d10c43ff5c3a5389c30969ecc57eb62ac9e242238e72eb46374d8c06026
[INFO] running `Command { std: "docker" "start" "-a" "17d60d10c43ff5c3a5389c30969ecc57eb62ac9e242238e72eb46374d8c06026", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17d60d10c43ff5c3a5389c30969ecc57eb62ac9e242238e72eb46374d8c06026", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17d60d10c43ff5c3a5389c30969ecc57eb62ac9e242238e72eb46374d8c06026", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 551509fff56bb458b9d31ef34ee24f71cd21eb535af2fe5eaac576157e9dc286
[INFO] running `Command { std: "docker" "start" "-a" "551509fff56bb458b9d31ef34ee24f71cd21eb535af2fe5eaac576157e9dc286", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `ArxivQuery`
[INFO] [stdout]  --> src/core/mod.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use structs::{Arxiv, ArxivDaily, ArxivQuery, ArxivCollection, ArxivQueryBuilder};
[INFO] [stdout]   |                                      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ArxivQuery`
[INFO] [stdout]  --> src/core/mod.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use structs::{Arxiv, ArxivDaily, ArxivQuery, ArxivCollection, ArxivQueryBuilder};
[INFO] [stdout]   |                                      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.34s
[INFO] running `Command { std: "docker" "inspect" "551509fff56bb458b9d31ef34ee24f71cd21eb535af2fe5eaac576157e9dc286", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "551509fff56bb458b9d31ef34ee24f71cd21eb535af2fe5eaac576157e9dc286", kill_on_drop: false }`
[INFO] [stdout] 551509fff56bb458b9d31ef34ee24f71cd21eb535af2fe5eaac576157e9dc286