[INFO] cloning repository https://github.com/tremwil/lending_iter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tremwil/lending_iter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftremwil%2Flending_iter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftremwil%2Flending_iter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2d50612ee4044cafc2d8c42cca1b4c04b70c356
[INFO] checking tremwil/lending_iter against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftremwil%2Flending_iter" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tremwil/lending_iter on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tremwil/lending_iter
[INFO] finished tweaking git repo https://github.com/tremwil/lending_iter
[INFO] tweaked toml for git repo https://github.com/tremwil/lending_iter written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tremwil/lending_iter 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nougat v0.2.4
[INFO] [stderr]   Downloaded nougat-proc_macros v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd98429441fff7a975116b7f4333dc1c2009e220ed9827f73eaef77e4014fb1f
[INFO] running `Command { std: "docker" "start" "-a" "bd98429441fff7a975116b7f4333dc1c2009e220ed9827f73eaef77e4014fb1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd98429441fff7a975116b7f4333dc1c2009e220ed9827f73eaef77e4014fb1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd98429441fff7a975116b7f4333dc1c2009e220ed9827f73eaef77e4014fb1f", kill_on_drop: false }`
[INFO] [stdout] bd98429441fff7a975116b7f4333dc1c2009e220ed9827f73eaef77e4014fb1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b84f3d8ed891506e895835a78ebdcb097f2a4b6c70bfaf621ae0d24e4680171
[INFO] running `Command { std: "docker" "start" "-a" "3b84f3d8ed891506e895835a78ebdcb097f2a4b6c70bfaf621ae0d24e4680171", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling macro_rules_attribute-proc_macro v0.1.3
[INFO] [stderr]     Checking macro_rules_attribute v0.1.3
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling nougat-proc_macros v0.2.4
[INFO] [stderr]     Checking nougat v0.2.4
[INFO] [stderr]     Checking lending-iter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `IntoIterator`
[INFO] [stdout]  --> src/constructors/from_iter.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::iter::{IntoIterator, Iterator};
[INFO] [stdout]   |                  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoIterator`
[INFO] [stdout]  --> src/constructors/from_iter.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::iter::{IntoIterator, Iterator};
[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 4.47s
[INFO] running `Command { std: "docker" "inspect" "3b84f3d8ed891506e895835a78ebdcb097f2a4b6c70bfaf621ae0d24e4680171", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b84f3d8ed891506e895835a78ebdcb097f2a4b6c70bfaf621ae0d24e4680171", kill_on_drop: false }`
[INFO] [stdout] 3b84f3d8ed891506e895835a78ebdcb097f2a4b6c70bfaf621ae0d24e4680171