[INFO] crate chan-downloader 0.1.1 is already in cache
[INFO] checking chan-downloader-0.1.1 against try#8a5e87609850cdd8679aada01eb0f3062f254ca8 for pr-71140
[INFO] extracting crate chan-downloader 0.1.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate chan-downloader 0.1.1 on toolchain 8a5e87609850cdd8679aada01eb0f3062f254ca8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate chan-downloader 0.1.1
[INFO] finished tweaking crates.io crate chan-downloader 0.1.1
[INFO] tweaked toml for crates.io crate chan-downloader 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3e4b0baf2c874bdfd1f60807c039148cfc54e68a7b7422bbaa082d012952cb42
[INFO] running `"docker" "start" "-a" "3e4b0baf2c874bdfd1f60807c039148cfc54e68a7b7422bbaa082d012952cb42"`
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking indicatif v0.11.0
[INFO] [stderr]     Checking chan-downloader v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/main.rs:33:65
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn save_image(url: &str, name: &str, client: &Client) -> Result<(String), String> {
[INFO] [stderr]    |                                                                 ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/main.rs:33:65
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn save_image(url: &str, name: &str, client: &Client) -> Result<(String), String> {
[INFO] [stderr]    |                                                                 ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::path::Path::join` that must be used
[INFO] [stderr]   --> src/main.rs:40:17
[INFO] [stderr]    |
[INFO] [stderr] 40 |                 tmp_dir.unwrap().path().join(name);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::path::Path::join` that must be used
[INFO] [stderr]   --> src/main.rs:40:17
[INFO] [stderr]    |
[INFO] [stderr] 40 |                 tmp_dir.unwrap().path().join(name);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.43s
[INFO] running `"docker" "inspect" "3e4b0baf2c874bdfd1f60807c039148cfc54e68a7b7422bbaa082d012952cb42"`
[INFO] running `"docker" "rm" "-f" "3e4b0baf2c874bdfd1f60807c039148cfc54e68a7b7422bbaa082d012952cb42"`
[INFO] [stdout] 3e4b0baf2c874bdfd1f60807c039148cfc54e68a7b7422bbaa082d012952cb42