[INFO] fetching crate bitcoinleveldb-sync 0.1.16-alpha.0...
[INFO] checking bitcoinleveldb-sync-0.1.16-alpha.0 against master#0ef0dd24510b52da980889546fcd15254dc56a23 for pr-126452
[INFO] extracting crate bitcoinleveldb-sync 0.1.16-alpha.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate bitcoinleveldb-sync 0.1.16-alpha.0 on toolchain 0ef0dd24510b52da980889546fcd15254dc56a23
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0ef0dd24510b52da980889546fcd15254dc56a23" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitcoinleveldb-sync 0.1.16-alpha.0
[INFO] finished tweaking crates.io crate bitcoinleveldb-sync 0.1.16-alpha.0
[INFO] tweaked toml for crates.io crate bitcoinleveldb-sync 0.1.16-alpha.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0ef0dd24510b52da980889546fcd15254dc56a23" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 214 packages to latest compatible versions
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0ef0dd24510b52da980889546fcd15254dc56a23" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+0ef0dd24510b52da980889546fcd15254dc56a23" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6f0fda3c59fa1417a704ab8d1c6f363dbdd3735530513fa296bfc45f9a69dbe
[INFO] running `Command { std: "docker" "start" "-a" "c6f0fda3c59fa1417a704ab8d1c6f363dbdd3735530513fa296bfc45f9a69dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6f0fda3c59fa1417a704ab8d1c6f363dbdd3735530513fa296bfc45f9a69dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6f0fda3c59fa1417a704ab8d1c6f363dbdd3735530513fa296bfc45f9a69dbe", kill_on_drop: false }`
[INFO] [stdout] c6f0fda3c59fa1417a704ab8d1c6f363dbdd3735530513fa296bfc45f9a69dbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+0ef0dd24510b52da980889546fcd15254dc56a23" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a072830cd7630ab23f33d462e756eb00cc602293a62b21064ec9b38419a4848
[INFO] running `Command { std: "docker" "start" "-a" "0a072830cd7630ab23f33d462e756eb00cc602293a62b21064ec9b38419a4848", kill_on_drop: false }`
[INFO] [stderr]    Compiling backtrace v0.3.73
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[INFO] [stderr]     Checking bitcoin-imports v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoin-cfg v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoin-derive v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoinleveldb-sync v0.1.16-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/mutexlock.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / /**
[INFO] [stdout] 2  | |   | Helper class that locks a mutex on construction
[INFO] [stdout] 3  | |   | and unlocks the mutex when the destructor
[INFO] [stdout] 4  | |   | of the MutexLock object is invoked.
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |   |
[INFO] [stdout] 16 | |   */
[INFO] [stdout]    | |____^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/mutexlock.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / /**
[INFO] [stdout] 2  | |   | Helper class that locks a mutex on construction
[INFO] [stdout] 3  | |   | and unlocks the mutex when the destructor
[INFO] [stdout] 4  | |   | of the MutexLock object is invoked.
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |   |
[INFO] [stdout] 16 | |   */
[INFO] [stdout]    | |____^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mu`
[INFO] [stdout]   --> src/mutexlock.rs:41:16
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new(mu: *mut parking_lot::RawMutex) -> Self {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_mu`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mu`
[INFO] [stdout]   --> src/mutexlock.rs:41:16
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new(mu: *mut parking_lot::RawMutex) -> Self {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_mu`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mu` is never read
[INFO] [stdout]   --> src/mutexlock.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct MutexLock {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 24 |     mu: *const parking_lot::RawMutex,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mu` is never read
[INFO] [stdout]   --> src/mutexlock.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct MutexLock {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 24 |     mu: *const parking_lot::RawMutex,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "0a072830cd7630ab23f33d462e756eb00cc602293a62b21064ec9b38419a4848", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a072830cd7630ab23f33d462e756eb00cc602293a62b21064ec9b38419a4848", kill_on_drop: false }`
[INFO] [stdout] 0a072830cd7630ab23f33d462e756eb00cc602293a62b21064ec9b38419a4848