[INFO] fetching crate bitcoinleveldb-merger 0.1.16-alpha.0...
[INFO] checking bitcoinleveldb-merger-0.1.16-alpha.0 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate bitcoinleveldb-merger 0.1.16-alpha.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate bitcoinleveldb-merger 0.1.16-alpha.0 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitcoinleveldb-merger 0.1.16-alpha.0
[INFO] finished tweaking crates.io crate bitcoinleveldb-merger 0.1.16-alpha.0
[INFO] tweaked toml for crates.io crate bitcoinleveldb-merger 0.1.16-alpha.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c421d7be9ed4892a0080dd1a5df499af68bbec742b0547f04eb443c919ee875
[INFO] running `Command { std: "docker" "start" "-a" "6c421d7be9ed4892a0080dd1a5df499af68bbec742b0547f04eb443c919ee875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c421d7be9ed4892a0080dd1a5df499af68bbec742b0547f04eb443c919ee875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c421d7be9ed4892a0080dd1a5df499af68bbec742b0547f04eb443c919ee875", kill_on_drop: false }`
[INFO] [stdout] 6c421d7be9ed4892a0080dd1a5df499af68bbec742b0547f04eb443c919ee875
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fafcbb359b805b57476c6c8203e1eb02869470e80283f6643496a2f94474df17
[INFO] running `Command { std: "docker" "start" "-a" "fafcbb359b805b57476c6c8203e1eb02869470e80283f6643496a2f94474df17", kill_on_drop: false }`
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[INFO] [stderr]     Checking bitcoin-imports v0.1.16-alpha.0
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[INFO] [stderr]    Compiling bitcoinleveldb-util v0.1.16-alpha.0
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[INFO] [stderr]    Compiling bitcoinleveldb-comparator v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoinleveldb-key v0.1.16-alpha.0
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[INFO] [stderr]    Compiling bitcoinleveldb-log v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoinleveldb-cache v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoinleveldb-env v0.1.16-alpha.0
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[INFO] [stderr]    Compiling bitcoinleveldb-options v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoinleveldb-table v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoinleveldb-merger v0.1.16-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `bitcoin_derive::*`
[INFO] [stdout]  --> src/imports.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) use bitcoin_derive::*;
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bitcoin_derive::*`
[INFO] [stdout]  --> src/imports.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) use bitcoin_derive::*;
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comparator`
[INFO] [stdout]   --> src/merger.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         comparator: Box<dyn SliceComparator>,
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comparator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comparator`
[INFO] [stdout]   --> src/merger.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         comparator: Box<dyn SliceComparator>,
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comparator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `children`
[INFO] [stdout]   --> src/merger.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         children:   *mut *mut LevelDBIterator,
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_children`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `children`
[INFO] [stdout]   --> src/merger.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         children:   *mut *mut LevelDBIterator,
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_children`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/merger.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         n:          i32) -> *mut LevelDBIterator {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/merger.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         n:          i32) -> *mut LevelDBIterator {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comparator`
[INFO] [stdout]   --> src/merger.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         comparator: Box<dyn SliceComparator>,
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comparator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comparator`
[INFO] [stdout]   --> src/merger.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         comparator: Box<dyn SliceComparator>,
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comparator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `children`
[INFO] [stdout]   --> src/merger.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |         children:   *mut *mut LevelDBIterator,
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_children`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `children`
[INFO] [stdout]   --> src/merger.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |         children:   *mut *mut LevelDBIterator,
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_children`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/merger.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         n:          i32) -> Self {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/merger.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         n:          i32) -> Self {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]    --> src/merger.rs:129:28
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn seek(&mut self, target: &Slice)  {
[INFO] [stdout]     |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]    --> src/merger.rs:129:28
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn seek(&mut self, target: &Slice)  {
[INFO] [stdout]     |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `base`, `comparator`, `children`, `n`, `current`, and `direction` are never read
[INFO] [stdout]   --> src/merger.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct MergingIterator {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout] 38 |     base: LevelDBIterator,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     comparator: Box<dyn SliceComparator>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 48 |     children:   *mut LevelDBIteratorWrapper,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 49 |     n:          i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 50 |     current:    *mut LevelDBIteratorWrapper,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 51 |     direction:  merging_iterator::Direction,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `base`, `comparator`, `children`, `n`, `current`, and `direction` are never read
[INFO] [stdout]   --> src/merger.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct MergingIterator {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout] 38 |     base: LevelDBIterator,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     comparator: Box<dyn SliceComparator>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 48 |     children:   *mut LevelDBIteratorWrapper,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 49 |     n:          i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 50 |     current:    *mut LevelDBIteratorWrapper,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 51 |     direction:  merging_iterator::Direction,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "fafcbb359b805b57476c6c8203e1eb02869470e80283f6643496a2f94474df17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fafcbb359b805b57476c6c8203e1eb02869470e80283f6643496a2f94474df17", kill_on_drop: false }`
[INFO] [stdout] fafcbb359b805b57476c6c8203e1eb02869470e80283f6643496a2f94474df17
