[INFO] fetching crate merkle-log 0.0.6...
[INFO] testing merkle-log-0.0.6 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate merkle-log 0.0.6 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate merkle-log 0.0.6 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merkle-log 0.0.6
[INFO] finished tweaking crates.io crate merkle-log 0.0.6
[INFO] tweaked toml for crates.io crate merkle-log 0.0.6 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48e1e2ad23b5d8d5ffdb5798c5e7b53fa016c7e600ac90cdbc512bc18fcb710e
[INFO] running `Command { std: "docker" "start" "-a" "48e1e2ad23b5d8d5ffdb5798c5e7b53fa016c7e600ac90cdbc512bc18fcb710e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48e1e2ad23b5d8d5ffdb5798c5e7b53fa016c7e600ac90cdbc512bc18fcb710e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48e1e2ad23b5d8d5ffdb5798c5e7b53fa016c7e600ac90cdbc512bc18fcb710e", kill_on_drop: false }`
[INFO] [stdout] 48e1e2ad23b5d8d5ffdb5798c5e7b53fa016c7e600ac90cdbc512bc18fcb710e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7853480c79ec9086fe4237c4af13c0e0c640adad3eff6b6550d0edda4d8209cc
[INFO] running `Command { std: "docker" "start" "-a" "7853480c79ec9086fe4237c4af13c0e0c640adad3eff6b6550d0edda4d8209cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling merkle-log v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `root_id`
[INFO] [stdout]    --> src/util.rs:502:25
[INFO] [stdout]     |
[INFO] [stdout] 502 |     pub(crate) const fn root_id(size: u64) -> Self {
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.42s
[INFO] running `Command { std: "docker" "inspect" "7853480c79ec9086fe4237c4af13c0e0c640adad3eff6b6550d0edda4d8209cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7853480c79ec9086fe4237c4af13c0e0c640adad3eff6b6550d0edda4d8209cc", kill_on_drop: false }`
[INFO] [stdout] 7853480c79ec9086fe4237c4af13c0e0c640adad3eff6b6550d0edda4d8209cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee5e815a65695505752f6b70fb796823c6a45e25e7f4de8801caf1c4f88e8e28
[INFO] running `Command { std: "docker" "start" "-a" "ee5e815a65695505752f6b70fb796823c6a45e25e7f4de8801caf1c4f88e8e28", kill_on_drop: false }`
[INFO] [stderr]    Compiling merkle-log v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `root_id`
[INFO] [stdout]    --> src/util.rs:502:25
[INFO] [stdout]     |
[INFO] [stdout] 502 |     pub(crate) const fn root_id(size: u64) -> Self {
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `root_id`
[INFO] [stdout]    --> src/util.rs:502:25
[INFO] [stdout]     |
[INFO] [stdout] 502 |     pub(crate) const fn root_id(size: u64) -> Self {
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "ee5e815a65695505752f6b70fb796823c6a45e25e7f4de8801caf1c4f88e8e28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee5e815a65695505752f6b70fb796823c6a45e25e7f4de8801caf1c4f88e8e28", kill_on_drop: false }`
[INFO] [stdout] ee5e815a65695505752f6b70fb796823c6a45e25e7f4de8801caf1c4f88e8e28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e0a4d729f82ae348a31482550908f323a29207221aeae8ba6725ab4ec0498c23
[INFO] running `Command { std: "docker" "start" "-a" "e0a4d729f82ae348a31482550908f323a29207221aeae8ba6725ab4ec0498c23", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `root_id`
[INFO] [stderr]    --> src/util.rs:502:25
[INFO] [stderr]     |
[INFO] [stderr] 502 |     pub(crate) const fn root_id(size: u64) -> Self {
[INFO] [stderr]     |                         ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `root_id`
[INFO] [stderr]    --> src/util.rs:502:25
[INFO] [stderr]     |
[INFO] [stderr] 502 |     pub(crate) const fn root_id(size: u64) -> Self {
[INFO] [stderr]     |                         ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/merkle_log-b73f20facd787377)
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::creation ... ok
[INFO] [stderr]    Doc-tests merkle-log
[INFO] [stdout] test tests::prove_and_verify ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test src/util.rs - util::TreeID::is_leaf (line 201) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::uncle (line 292) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::proving_ids (line 448) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::index (line 217) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::depth (line 238) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::sibling (line 276) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::spans (line 377) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::new (line 177) ... ok
[INFO] [stdout] test src/lib.rs - MerkleLog<D, N>::proving_ids (line 137) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::parent (line 255) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::right (line 331) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::subroots (line 399) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::span (line 353) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::left (line 309) ... ok
[INFO] [stdout] test src/lib.rs - MerkleLog<D, N>::append (line 279) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::appending_ids (line 472) ... ok
[INFO] [stdout] test src/lib.rs - MerkleLog<D, N>::appending_ids (line 249) ... ok
[INFO] [stdout] test src/lib.rs - MerkleLog (line 39) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.53s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e0a4d729f82ae348a31482550908f323a29207221aeae8ba6725ab4ec0498c23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0a4d729f82ae348a31482550908f323a29207221aeae8ba6725ab4ec0498c23", kill_on_drop: false }`
[INFO] [stdout] e0a4d729f82ae348a31482550908f323a29207221aeae8ba6725ab4ec0498c23