[INFO] fetching crate merkle-log 0.0.6...
[INFO] testing merkle-log-0.0.6 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[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 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e1ad5e710c02fd7c5e67683fd492a6b74e7d491c8a27b86a055ca45b6d7c723
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5e1ad5e710c02fd7c5e67683fd492a6b74e7d491c8a27b86a055ca45b6d7c723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e1ad5e710c02fd7c5e67683fd492a6b74e7d491c8a27b86a055ca45b6d7c723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e1ad5e710c02fd7c5e67683fd492a6b74e7d491c8a27b86a055ca45b6d7c723", kill_on_drop: false }`
[INFO] [stdout] 5e1ad5e710c02fd7c5e67683fd492a6b74e7d491c8a27b86a055ca45b6d7c723
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 49484ec1533c01559aad4c7ad320d193216b70e14964c8b2a626b89913f9b93d
[INFO] running `Command { std: "docker" "start" "-a" "49484ec1533c01559aad4c7ad320d193216b70e14964c8b2a626b89913f9b93d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[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 36.13s
[INFO] running `Command { std: "docker" "inspect" "49484ec1533c01559aad4c7ad320d193216b70e14964c8b2a626b89913f9b93d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49484ec1533c01559aad4c7ad320d193216b70e14964c8b2a626b89913f9b93d", kill_on_drop: false }`
[INFO] [stdout] 49484ec1533c01559aad4c7ad320d193216b70e14964c8b2a626b89913f9b93d
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f9056cdd05f6831f7926104bf0c7de97eede340a022e4262a5d3f9e956e3c9d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6f9056cdd05f6831f7926104bf0c7de97eede340a022e4262a5d3f9e956e3c9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[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]    Compiling sha2 v0.9.8
[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 test [unoptimized + debuginfo] target(s) in 3.50s
[INFO] running `Command { std: "docker" "inspect" "6f9056cdd05f6831f7926104bf0c7de97eede340a022e4262a5d3f9e956e3c9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f9056cdd05f6831f7926104bf0c7de97eede340a022e4262a5d3f9e956e3c9d", kill_on_drop: false }`
[INFO] [stdout] 6f9056cdd05f6831f7926104bf0c7de97eede340a022e4262a5d3f9e956e3c9d
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 110426093c6fce00907a876bff258c7528f35172146798aa5c8734250c019b68
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "110426093c6fce00907a876bff258c7528f35172146798aa5c8734250c019b68", 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: `merkle-log` (lib) generated 1 warning
[INFO] [stderr] warning: `merkle-log` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/merkle_log-3a31d9376c7548e7)
[INFO] [stdout] 
[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 0.08s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test src/util.rs - util::TreeID::span (line 353) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::sibling (line 276) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::index (line 217) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::right (line 331) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::spans (line 377) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::depth (line 238) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::new (line 177) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::left (line 309) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::appending_ids (line 472) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::is_leaf (line 201) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::parent (line 255) ... ok
[INFO] [stdout] test src/lib.rs - MerkleLog<D,N>::append (line 279) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::proving_ids (line 448) ... 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] test src/lib.rs - MerkleLog<D,N>::proving_ids (line 137) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::uncle (line 292) ... ok
[INFO] [stdout] test src/util.rs - util::TreeID::subroots (line 399) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 9.46s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "110426093c6fce00907a876bff258c7528f35172146798aa5c8734250c019b68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "110426093c6fce00907a876bff258c7528f35172146798aa5c8734250c019b68", kill_on_drop: false }`
[INFO] [stdout] 110426093c6fce00907a876bff258c7528f35172146798aa5c8734250c019b68