[INFO] fetching crate sapling-crypto 0.0.1...
[INFO] checking sapling-crypto-0.0.1 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate sapling-crypto 0.0.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate sapling-crypto 0.0.1 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate sapling-crypto 0.0.1
[INFO] finished tweaking crates.io crate sapling-crypto 0.0.1
[INFO] tweaked toml for crates.io crate sapling-crypto 0.0.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bellman v0.0.6
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 47fd58c060fa2d877fad674386b55cfe164f4aafc05bd80cd6fa696cb950e617
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "47fd58c060fa2d877fad674386b55cfe164f4aafc05bd80cd6fa696cb950e617"`
[INFO] [stderr]     Checking pairing v0.13.2
[INFO] [stderr]     Checking bellman v0.0.6
[INFO] [stderr]     Checking sapling-crypto v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/jubjub/fs.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |         try!(write!(f, "0x"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/jubjub/fs.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |             try!(write!(f, "{:016x}", *i));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/jubjub/fs.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |         try!(write!(f, "0x"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/jubjub/fs.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |             try!(write!(f, "{:016x}", *i));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/circuit/uint32.rs:302:17
[INFO] [stderr]     |
[INFO] [stderr] 302 |             let mut v = (0..32).map(|_| Boolean::<()>::constant(rng.gen())).collect::<Vec<_>>();
[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 6.33s
[INFO] running `"docker" "inspect" "47fd58c060fa2d877fad674386b55cfe164f4aafc05bd80cd6fa696cb950e617"`
[INFO] running `"docker" "rm" "-f" "47fd58c060fa2d877fad674386b55cfe164f4aafc05bd80cd6fa696cb950e617"`
[INFO] [stdout] 47fd58c060fa2d877fad674386b55cfe164f4aafc05bd80cd6fa696cb950e617