[INFO] crate bp7 0.4.0 is already in cache
[INFO] checking bp7-0.4.0 against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] extracting crate bp7 0.4.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate bp7 0.4.0 on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate bp7 0.4.0
[INFO] finished tweaking crates.io crate bp7 0.4.0
[INFO] tweaked toml for crates.io crate bp7 0.4.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate bp7 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 95b90b122f05633feac0d0c1bb2ba46f4c01fd3d101b35bd2ad76d21e7077f17
[INFO] running `"docker" "start" "-a" "95b90b122f05633feac0d0c1bb2ba46f4c01fd3d101b35bd2ad76d21e7077f17"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]     Checking smallvec v1.1.0
[INFO] [stderr]    Compiling derive_builder v0.8.1
[INFO] [stderr]     Checking half v1.4.0
[INFO] [stderr]     Checking instant v0.1.2
[INFO] [stderr]     Checking unicode-normalization v0.1.11
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling derive_builder_core v0.8.1
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking serde_bytes v0.11.3
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking serde_cbor v0.10.2
[INFO] [stderr]     Checking bp7 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/bundle.rs:402:77
[INFO] [stderr]     |
[INFO] [stderr] 402 |     pub fn extension_block(&self, block_type: CanonicalBlockType) -> Option<(&CanonicalBlock)> {
[INFO] [stderr]     |                                                                             ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/bundle.rs:415:17
[INFO] [stderr]     |
[INFO] [stderr] 415 |     ) -> Option<(&mut CanonicalBlock)> {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/bundle.rs:402:77
[INFO] [stderr]     |
[INFO] [stderr] 402 |     pub fn extension_block(&self, block_type: CanonicalBlockType) -> Option<(&CanonicalBlock)> {
[INFO] [stderr]     |                                                                             ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/bundle.rs:415:17
[INFO] [stderr]     |
[INFO] [stderr] 415 |     ) -> Option<(&mut CanonicalBlock)> {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `criterion`
[INFO] [stderr]  --> benches/benchmark.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | extern crate criterion;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `bp7`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/bundle_tests.rs:198:9
[INFO] [stderr]     |
[INFO] [stderr] 198 |     let mut numbers: Vec<u64> = b.canonicals.iter().map(|c| c.block_number).collect();
[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] error: build failed
[INFO] running `"docker" "inspect" "95b90b122f05633feac0d0c1bb2ba46f4c01fd3d101b35bd2ad76d21e7077f17"`
[INFO] running `"docker" "rm" "-f" "95b90b122f05633feac0d0c1bb2ba46f4c01fd3d101b35bd2ad76d21e7077f17"`
[INFO] [stdout] 95b90b122f05633feac0d0c1bb2ba46f4c01fd3d101b35bd2ad76d21e7077f17