[INFO] updating cached repository NattapongSiri/ds_prep_gen.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/NattapongSiri/ds_prep_gen.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/NattapongSiri/ds_prep_gen.rs" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/NattapongSiri/ds_prep_gen.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/NattapongSiri/ds_prep_gen.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/NattapongSiri/ds_prep_gen.rs" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/NattapongSiri/ds_prep_gen.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/NattapongSiri/ds_prep_gen.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e1dfde35dbd63f667b2e9f9ab9aa107035d9b933
[INFO] sha for GitHub repo NattapongSiri/ds_prep_gen.rs: e1dfde35dbd63f667b2e9f9ab9aa107035d9b933
[INFO] validating manifest of NattapongSiri/ds_prep_gen.rs on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of NattapongSiri/ds_prep_gen.rs on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing NattapongSiri/ds_prep_gen.rs
[INFO] finished frobbing NattapongSiri/ds_prep_gen.rs
[INFO] frobbed toml for NattapongSiri/ds_prep_gen.rs written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/NattapongSiri/ds_prep_gen.rs/Cargo.toml
[INFO] started frobbing NattapongSiri/ds_prep_gen.rs
[INFO] finished frobbing NattapongSiri/ds_prep_gen.rs
[INFO] frobbed toml for NattapongSiri/ds_prep_gen.rs written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/NattapongSiri/ds_prep_gen.rs/Cargo.toml
[INFO] crate NattapongSiri/ds_prep_gen.rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking NattapongSiri/ds_prep_gen.rs against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-4/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/NattapongSiri/ds_prep_gen.rs:/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 04de77ba819f5c54323be8c30e972bf956b26e252505dced054e21f4f6a64ad6
[INFO] running `"docker" "start" "-a" "04de77ba819f5c54323be8c30e972bf956b26e252505dced054e21f4f6a64ad6"`
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.0
[INFO] [stderr]    Compiling syn v0.15.21
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking ds_prep_gen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:40:29
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn main() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:40:29
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn main() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `RandomPoint`
[INFO] [stderr]   --> src/main.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct RandomPoint(SmallRng);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/main.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next`
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn next(&mut self) -> Point {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `RandomPoint`
[INFO] [stderr]   --> src/main.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct RandomPoint(SmallRng);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/main.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next`
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn next(&mut self) -> Point {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.37s
[INFO] running `"docker" "inspect" "04de77ba819f5c54323be8c30e972bf956b26e252505dced054e21f4f6a64ad6"`
[INFO] running `"docker" "rm" "-f" "04de77ba819f5c54323be8c30e972bf956b26e252505dced054e21f4f6a64ad6"`
[INFO] [stdout] 04de77ba819f5c54323be8c30e972bf956b26e252505dced054e21f4f6a64ad6