[INFO] updating cached repository nicolads87/rust-resource
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nicolads87/rust-resource
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nicolads87/rust-resource" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/nicolads87/rust-resource"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/nicolads87/rust-resource'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nicolads87/rust-resource" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/nicolads87/rust-resource"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/nicolads87/rust-resource'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b02618ecc8973c8a9d1717e5aa9b91fcef6e2249
[INFO] sha for GitHub repo nicolads87/rust-resource: b02618ecc8973c8a9d1717e5aa9b91fcef6e2249
[INFO] validating manifest of nicolads87/rust-resource on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nicolads87/rust-resource on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nicolads87/rust-resource
[INFO] finished frobbing nicolads87/rust-resource
[INFO] frobbed toml for nicolads87/rust-resource written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/nicolads87/rust-resource/Cargo.toml
[INFO] started frobbing nicolads87/rust-resource
[INFO] finished frobbing nicolads87/rust-resource
[INFO] frobbed toml for nicolads87/rust-resource written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/nicolads87/rust-resource/Cargo.toml
[INFO] crate nicolads87/rust-resource already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking nicolads87/rust-resource against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-4/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/nicolads87/rust-resource:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4c37cf9916a10168bc7f6520245a7d436a829fee81bb6f48361de34ed267f050
[INFO] running `"docker" "start" "-a" "4c37cf9916a10168bc7f6520245a7d436a829fee81bb6f48361de34ed267f050"`
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking rust-resource v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]   --> src/resource.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | use std::io;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::Error`
[INFO] [stderr]   --> src/resource.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | use serde_json::Error;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]   --> src/resource.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | use std::io;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::Error`
[INFO] [stderr]   --> src/resource.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | use serde_json::Error;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `future`
[INFO] [stderr]   --> src/main.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let future = HelloWorld.map(|value| {
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_future`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `future`
[INFO] [stderr]   --> src/main.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let future = HelloWorld.map(|value| {
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_future`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `None`
[INFO] [stderr]   --> src/resource.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     None,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Display`
[INFO] [stderr]   --> src/main.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     struct Display<T>(T);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `None`
[INFO] [stderr]   --> src/resource.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     None,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.93s
[INFO] running `"docker" "inspect" "4c37cf9916a10168bc7f6520245a7d436a829fee81bb6f48361de34ed267f050"`
[INFO] running `"docker" "rm" "-f" "4c37cf9916a10168bc7f6520245a7d436a829fee81bb6f48361de34ed267f050"`
[INFO] [stdout] 4c37cf9916a10168bc7f6520245a7d436a829fee81bb6f48361de34ed267f050