[INFO] fetching crate buildchain 0.4.9...
[INFO] extracting crate buildchain 0.4.9 into work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/buildchain/0.4.9
[INFO] extracting crate buildchain 0.4.9 into work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/buildchain/0.4.9
[INFO] validating manifest of buildchain-0.4.9 on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of buildchain-0.4.9 on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing buildchain-0.4.9
[INFO] finished frobbing buildchain-0.4.9
[INFO] frobbed toml for buildchain-0.4.9 written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/buildchain/0.4.9/Cargo.toml
[INFO] started frobbing buildchain-0.4.9
[INFO] finished frobbing buildchain-0.4.9
[INFO] frobbed toml for buildchain-0.4.9 written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/buildchain/0.4.9/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking buildchain-0.4.9 against master#9f06855064ed06a50c496577b21ca50f92a2e67d for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-4/master#9f06855064ed06a50c496577b21ca50f92a2e67d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/buildchain/0.4.9:/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" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a7150dfa5a9f429351e87ad017da9e69d95d7efcdba001564fa5fca925a92dad
[INFO] running `"docker" "start" "-a" "a7150dfa5a9f429351e87ad017da9e69d95d7efcdba001564fa5fca925a92dad"`
[INFO] [stderr]     Checking buildchain v0.4.9 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]    --> src/store.rs:254:16
[INFO] [stderr]     |
[INFO] [stderr] 254 |     use rand::{Rng, OsRng};
[INFO] [stderr]     |                ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rand::OsRng': import with rand::rngs::OsRng instead
[INFO] [stderr]    --> src/store.rs:254:21
[INFO] [stderr]     |
[INFO] [stderr] 254 |     use rand::{Rng, OsRng};
[INFO] [stderr]     |                     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rand::OsRng': import with rand::rngs::OsRng instead
[INFO] [stderr]    --> src/store.rs:317:27
[INFO] [stderr]     |
[INFO] [stderr] 317 |             let mut rng = OsRng::new().unwrap();
[INFO] [stderr]     |                           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rand::OsRng': import with rand::rngs::OsRng instead
[INFO] [stderr]    --> src/store.rs:361:27
[INFO] [stderr]     |
[INFO] [stderr] 361 |             let mut rng = OsRng::new().unwrap();
[INFO] [stderr]     |                           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rand::OsRng': import with rand::rngs::OsRng instead
[INFO] [stderr]    --> src/store.rs:395:27
[INFO] [stderr]     |
[INFO] [stderr] 395 |             let mut rng = OsRng::new().unwrap();
[INFO] [stderr]     |                           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rand::OsRng': import with rand::rngs::OsRng instead
[INFO] [stderr]    --> src/store.rs:431:27
[INFO] [stderr]     |
[INFO] [stderr] 431 |             let mut rng = OsRng::new().unwrap();
[INFO] [stderr]     |                           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `fill_bytes` found for type `rand::OsRng` in the current scope
[INFO] [stderr]    --> src/store.rs:318:17
[INFO] [stderr]     |
[INFO] [stderr] 318 |             rng.fill_bytes(&mut content);
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]     = note: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]             `use rand::RngCore;`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `fill_bytes` found for type `rand::OsRng` in the current scope
[INFO] [stderr]    --> src/store.rs:362:17
[INFO] [stderr]     |
[INFO] [stderr] 362 |             rng.fill_bytes(&mut content);
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]     = note: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]             `use rand::RngCore;`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `fill_bytes` found for type `rand::OsRng` in the current scope
[INFO] [stderr]    --> src/store.rs:396:17
[INFO] [stderr]     |
[INFO] [stderr] 396 |             rng.fill_bytes(&mut block);
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]     = note: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]             `use rand::RngCore;`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `fill_bytes` found for type `rand::OsRng` in the current scope
[INFO] [stderr]    --> src/store.rs:432:17
[INFO] [stderr]     |
[INFO] [stderr] 432 |             rng.fill_bytes(&mut block);
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]     = note: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]             `use rand::RngCore;`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `buildchain`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a7150dfa5a9f429351e87ad017da9e69d95d7efcdba001564fa5fca925a92dad"`
[INFO] running `"docker" "rm" "-f" "a7150dfa5a9f429351e87ad017da9e69d95d7efcdba001564fa5fca925a92dad"`
[INFO] [stdout] a7150dfa5a9f429351e87ad017da9e69d95d7efcdba001564fa5fca925a92dad