[INFO] updating cached repository waku-waku/rust-samples
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/waku-waku/rust-samples
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/waku-waku/rust-samples" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/waku-waku/rust-samples"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/waku-waku/rust-samples'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/waku-waku/rust-samples" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/waku-waku/rust-samples"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/waku-waku/rust-samples'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ce06c702b94b5f8274bfac66e57d84538f10c6f8
[INFO] sha for GitHub repo waku-waku/rust-samples: ce06c702b94b5f8274bfac66e57d84538f10c6f8
[INFO] validating manifest of waku-waku/rust-samples on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of waku-waku/rust-samples on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing waku-waku/rust-samples
[INFO] finished frobbing waku-waku/rust-samples
[INFO] frobbed toml for waku-waku/rust-samples written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/waku-waku/rust-samples/Cargo.toml
[INFO] started frobbing waku-waku/rust-samples
[INFO] finished frobbing waku-waku/rust-samples
[INFO] frobbed toml for waku-waku/rust-samples written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/waku-waku/rust-samples/Cargo.toml
[INFO] crate waku-waku/rust-samples already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking waku-waku/rust-samples against try#78b0bd8441ef961f6475e3d47fe3bca38cb83432 for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-4/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/waku-waku/rust-samples:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 68e3513b32a300e5a951c10624d8368898793a7d50e53c378801395e3f1de4f0
[INFO] running `"docker" "start" "-a" "68e3513b32a300e5a951c10624d8368898793a7d50e53c378801395e3f1de4f0"`
[INFO] [stderr]     Checking rust-samples v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `src` is never read
[INFO] [stderr]   --> src/make_rust_file.rs:56:10
[INFO] [stderr]    |
[INFO] [stderr] 56 |     let mut src = String::new();
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `string` is never read
[INFO] [stderr]   --> src/make_rust_file.rs:79:10
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let mut string = String::new();
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `src` is never read
[INFO] [stderr]   --> src/make_rust_file.rs:56:10
[INFO] [stderr]    |
[INFO] [stderr] 56 |     let mut src = String::new();
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `string` is never read
[INFO] [stderr]   --> src/make_rust_file.rs:79:10
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let mut string = String::new();
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.45s
[INFO] running `"docker" "inspect" "68e3513b32a300e5a951c10624d8368898793a7d50e53c378801395e3f1de4f0"`
[INFO] running `"docker" "rm" "-f" "68e3513b32a300e5a951c10624d8368898793a7d50e53c378801395e3f1de4f0"`
[INFO] [stdout] 68e3513b32a300e5a951c10624d8368898793a7d50e53c378801395e3f1de4f0