[INFO] fetching crate sdb_server_core 0.6.0...
[INFO] checking sdb_server_core-0.6.0 against 6e4b95ed0735c3bbfb308e6f158f479b4d14f1aa for pr-159356
[INFO] extracting crate sdb_server_core 0.6.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate sdb_server_core 0.6.0
[INFO] finished tweaking crates.io crate sdb_server_core 0.6.0
[INFO] tweaked toml for crates.io crate sdb_server_core 0.6.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sdb_server_core 0.6.0 on toolchain 6e4b95ed0735c3bbfb308e6f158f479b4d14f1aa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6e4b95ed0735c3bbfb308e6f158f479b4d14f1aa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6e4b95ed0735c3bbfb308e6f158f479b4d14f1aa" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 335 packages to latest compatible versions
[INFO] [stderr]       Adding config v0.13.4 (available: v0.15.25)
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[INFO] [stderr]       Adding subtle v2.4.1 (available: v2.6.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6e4b95ed0735c3bbfb308e6f158f479b4d14f1aa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c36f533e8924a726b63f9d01e781fa8c8c28c96d1d595403829afb31452ee0f5" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4529ed40f37dc3e6a815c075bd892cd59af1936e37956401f0fc13556d57b407
[INFO] running `Command { std: "docker" "start" "4529ed40f37dc3e6a815c075bd892cd59af1936e37956401f0fc13556d57b407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4529ed40f37dc3e6a815c075bd892cd59af1936e37956401f0fc13556d57b407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4529ed40f37dc3e6a815c075bd892cd59af1936e37956401f0fc13556d57b407" "/opt/rustwide/cargo-home/bin/cargo" "+6e4b95ed0735c3bbfb308e6f158f479b4d14f1aa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4529ed40f37dc3e6a815c075bd892cd59af1936e37956401f0fc13556d57b407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4529ed40f37dc3e6a815c075bd892cd59af1936e37956401f0fc13556d57b407" "/opt/rustwide/cargo-home/bin/cargo" "+6e4b95ed0735c3bbfb308e6f158f479b4d14f1aa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `sdb_core::utils`
[INFO] [stdout]  --> src/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sdb_core::utils;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdb_core::utils`
[INFO] [stdout]  --> src/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sdb_core::utils;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: crater fail !! problematic pattern detected !!
[INFO] [stdout]    --> src/server.rs:206:28
[INFO] [stdout]     |
[INFO] [stdout] 206 |                 if let Err(future::TimeoutError {..}) = future::timeout(
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type is defined in crate `async_std`
[INFO] [stdout]     = note: `#[deny(rest_pattern_match_on_struct_with_all_private_fields)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/handler.rs:121:15
[INFO] [stdout]     |
[INFO] [stdout] 121 |     match line.borrow() {
[INFO] [stdout]     |               ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: crater fail !! problematic pattern detected !!
[INFO] [stdout]    --> src/server.rs:206:28
[INFO] [stdout]     |
[INFO] [stdout] 206 |                 if let Err(future::TimeoutError {..}) = future::timeout(
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type is defined in crate `async_std`
[INFO] [stdout]     = note: `#[deny(rest_pattern_match_on_struct_with_all_private_fields)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/handler.rs:121:15
[INFO] [stdout]     |
[INFO] [stdout] 121 |     match line.borrow() {
[INFO] [stdout]     |               ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sdb_server_core` (lib test) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `sdb_server_core` (lib) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4529ed40f37dc3e6a815c075bd892cd59af1936e37956401f0fc13556d57b407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4529ed40f37dc3e6a815c075bd892cd59af1936e37956401f0fc13556d57b407", kill_on_drop: false }`
[INFO] [stdout] 4529ed40f37dc3e6a815c075bd892cd59af1936e37956401f0fc13556d57b407
