[INFO] updating cached repository flavray/avro-rs-ffi
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/flavray/avro-rs-ffi
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/flavray/avro-rs-ffi" "work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/flavray/avro-rs-ffi"`
[INFO] [stderr] Cloning into 'work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/flavray/avro-rs-ffi'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/flavray/avro-rs-ffi" "work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/flavray/avro-rs-ffi"`
[INFO] [stderr] Cloning into 'work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/flavray/avro-rs-ffi'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c6b9e7278565a5f3ca5e4159fca2a27f75335586
[INFO] sha for GitHub repo flavray/avro-rs-ffi: c6b9e7278565a5f3ca5e4159fca2a27f75335586
[INFO] validating manifest of flavray/avro-rs-ffi on toolchain master#7840a0b753a065a41999f1fb6028f67d33e3fdd5
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+7840a0b753a065a41999f1fb6028f67d33e3fdd5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of flavray/avro-rs-ffi on toolchain try#6a9f0b6cc40687e25f9d772e3b10bab335c63853
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+6a9f0b6cc40687e25f9d772e3b10bab335c63853-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing flavray/avro-rs-ffi
[INFO] finished frobbing flavray/avro-rs-ffi
[INFO] frobbed toml for flavray/avro-rs-ffi written to work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/flavray/avro-rs-ffi/Cargo.toml
[INFO] started frobbing flavray/avro-rs-ffi
[INFO] finished frobbing flavray/avro-rs-ffi
[INFO] frobbed toml for flavray/avro-rs-ffi written to work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/flavray/avro-rs-ffi/Cargo.toml
[INFO] crate flavray/avro-rs-ffi already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+7840a0b753a065a41999f1fb6028f67d33e3fdd5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+6a9f0b6cc40687e25f9d772e3b10bab335c63853-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking flavray/avro-rs-ffi against try#6a9f0b6cc40687e25f9d772e3b10bab335c63853 for pr-60466
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60466/worker-6/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/flavray/avro-rs-ffi:/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" "+6a9f0b6cc40687e25f9d772e3b10bab335c63853-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e48da44b4a4c400637cd09b4a46d55eb7e8e247892e0a070d7f5f10df448ea8d
[INFO] running `"docker" "start" "-a" "e48da44b4a4c400637cd09b4a46d55eb7e8e247892e0a070d7f5f10df448ea8d"`
[INFO] [stderr]     Checking iter-read v0.1.0
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking avro-rs v0.4.1
[INFO] [stderr]     Checking serde-pickle v0.4.1
[INFO] [stderr]     Checking avro-rs-ffi v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/core.rs:63:17
[INFO] [stderr]    |
[INFO] [stderr] 63 |             let mut out = format!("stacktrace: {}", error.backtrace()).to_owned();
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/core.rs:63:17
[INFO] [stderr]    |
[INFO] [stderr] 63 |             let mut out = format!("stacktrace: {}", error.backtrace()).to_owned();
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.36s
[INFO] running `"docker" "inspect" "e48da44b4a4c400637cd09b4a46d55eb7e8e247892e0a070d7f5f10df448ea8d"`
[INFO] running `"docker" "rm" "-f" "e48da44b4a4c400637cd09b4a46d55eb7e8e247892e0a070d7f5f10df448ea8d"`
[INFO] [stdout] e48da44b4a4c400637cd09b4a46d55eb7e8e247892e0a070d7f5f10df448ea8d