[INFO] crate root-io 0.2.1 is already in cache
[INFO] checking root-io-0.2.1 against try#8a5e87609850cdd8679aada01eb0f3062f254ca8 for pr-71140
[INFO] extracting crate root-io 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate root-io 0.2.1 on toolchain 8a5e87609850cdd8679aada01eb0f3062f254ca8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate root-io 0.2.1
[INFO] finished tweaking crates.io crate root-io 0.2.1
[INFO] tweaked toml for crates.io crate root-io 0.2.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "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] 32c269795ca863347513febe0778808e85bc8015f0c8b2fcf32d52a273ce7e68
[INFO] running `"docker" "start" "-a" "32c269795ca863347513febe0778808e85bc8015f0c8b2fcf32d52a273ce7e68"`
[INFO] [stderr]    Compiling backtrace-sys v0.1.35
[INFO] [stderr]     Checking encoding_rs v0.8.22
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking openssl v0.10.29
[INFO] [stderr]     Checking lzma-rs v0.1.2
[INFO] [stderr]     Checking lexical-core v0.6.7
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking tokio v0.2.18
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking backtrace v0.3.41
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking nom v5.1.1
[INFO] [stderr]     Checking native-tls v0.2.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]     Checking criterion v0.3.1
[INFO] [stderr]     Checking h2 v0.2.4
[INFO] [stderr]     Checking hyper v0.13.4
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking reqwest v0.10.4
[INFO] [stderr]     Checking alice-open-data v0.3.0
[INFO] [stderr]     Checking root-io v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/core/tkey.rs:78:23
[INFO] [stderr]    |
[INFO] [stderr] 78 |                       (decompress(obj).unwrap().1)
[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 block return value
[INFO] [stderr]   --> src/tree_reader/container.rs:53:23
[INFO] [stderr]    |
[INFO] [stderr] 53 |                       (decompress(buf).unwrap().1)
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/core/tkey.rs:78:23
[INFO] [stderr]    |
[INFO] [stderr] 78 |                       (decompress(obj).unwrap().1)
[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 block return value
[INFO] [stderr]   --> src/tree_reader/container.rs:53:23
[INFO] [stderr]    |
[INFO] [stderr] 53 |                       (decompress(buf).unwrap().1)
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `rt` as mutable, as it is not declared as mutable
[INFO] [stderr]   --> benches/iter_branch.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let rt = Runtime::new().unwrap();
[INFO] [stderr]    |         -- help: consider changing this to be mutable: `mut rt`
[INFO] [stderr] 26 |     rt.block_on(fut);
[INFO] [stderr]    |     ^^ cannot borrow as mutable
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `rt` as mutable, as it is not declared as mutable
[INFO] [stderr]   --> benches/iter_branch.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let rt = Runtime::new().unwrap();
[INFO] [stderr]    |         -- help: consider changing this to be mutable: `mut rt`
[INFO] [stderr] 45 |     rt.block_on(fut);
[INFO] [stderr]    |     ^^ cannot borrow as mutable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0596`.
[INFO] [stderr] error: could not compile `root-io`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "32c269795ca863347513febe0778808e85bc8015f0c8b2fcf32d52a273ce7e68"`
[INFO] running `"docker" "rm" "-f" "32c269795ca863347513febe0778808e85bc8015f0c8b2fcf32d52a273ce7e68"`
[INFO] [stdout] 32c269795ca863347513febe0778808e85bc8015f0c8b2fcf32d52a273ce7e68