[INFO] fetching crate light_binary_merkle_tree 0.1.0...
[INFO] testing light_binary_merkle_tree-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate light_binary_merkle_tree 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate light_binary_merkle_tree 0.1.0
[INFO] finished tweaking crates.io crate light_binary_merkle_tree 0.1.0
[INFO] tweaked toml for crates.io crate light_binary_merkle_tree 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate light_binary_merkle_tree 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7725b6e48d76ae6606edaec3ccc03c9462069f6a828eca6b96ab7c2177689693
[INFO] running `Command { std: "docker" "start" "-a" "7725b6e48d76ae6606edaec3ccc03c9462069f6a828eca6b96ab7c2177689693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7725b6e48d76ae6606edaec3ccc03c9462069f6a828eca6b96ab7c2177689693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7725b6e48d76ae6606edaec3ccc03c9462069f6a828eca6b96ab7c2177689693", kill_on_drop: false }`
[INFO] [stdout] 7725b6e48d76ae6606edaec3ccc03c9462069f6a828eca6b96ab7c2177689693
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51a6c383b875fe25cc23f008fa3a8ab2b735d7e65ec6d493cf9bd58ecef417d6
[INFO] running `Command { std: "docker" "start" "-a" "51a6c383b875fe25cc23f008fa3a8ab2b735d7e65ec6d493cf9bd58ecef417d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling light_binary_merkle_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sha2::Digest`
[INFO] [stdout]  --> src/lightbinarymerkletree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::Digest;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `hash` is never read
[INFO] [stdout]    --> src/lightbinarymerkletree.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                         hash = &(String::from("0x") + hash_.as_str());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.31s
[INFO] running `Command { std: "docker" "inspect" "51a6c383b875fe25cc23f008fa3a8ab2b735d7e65ec6d493cf9bd58ecef417d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51a6c383b875fe25cc23f008fa3a8ab2b735d7e65ec6d493cf9bd58ecef417d6", kill_on_drop: false }`
[INFO] [stdout] 51a6c383b875fe25cc23f008fa3a8ab2b735d7e65ec6d493cf9bd58ecef417d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff3fc0d8e435dd565d9090a9dbee8f83c6f161dfc3395357f75a345aa6084eba
[INFO] running `Command { std: "docker" "start" "-a" "ff3fc0d8e435dd565d9090a9dbee8f83c6f161dfc3395357f75a345aa6084eba", kill_on_drop: false }`
[INFO] [stderr]    Compiling light_binary_merkle_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sha2::Digest`
[INFO] [stdout]  --> src/lightbinarymerkletree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::Digest;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `hash` is never read
[INFO] [stdout]    --> src/lightbinarymerkletree.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                         hash = &(String::from("0x") + hash_.as_str());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `hash` is never read
[INFO] [stdout]    --> src/lightbinarymerkletree.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                         hash = &(String::from("0x") + hash_.as_str());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "ff3fc0d8e435dd565d9090a9dbee8f83c6f161dfc3395357f75a345aa6084eba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff3fc0d8e435dd565d9090a9dbee8f83c6f161dfc3395357f75a345aa6084eba", kill_on_drop: false }`
[INFO] [stdout] ff3fc0d8e435dd565d9090a9dbee8f83c6f161dfc3395357f75a345aa6084eba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 711413dfaf170b12ef2f0313e9d31be80f6717f50e2e2c8ad603eb91bce8f5d9
[INFO] running `Command { std: "docker" "start" "-a" "711413dfaf170b12ef2f0313e9d31be80f6717f50e2e2c8ad603eb91bce8f5d9", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `sha2::Digest`
[INFO] [stderr]  --> src/lightbinarymerkletree.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use sha2::Digest;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `hash` is never read
[INFO] [stderr]    --> src/lightbinarymerkletree.rs:218:25
[INFO] [stderr]     |
[INFO] [stderr] 218 |                         hash = &(String::from("0x") + hash_.as_str());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `light_binary_merkle_tree` (lib) generated 2 warnings
[INFO] [stderr] warning: `light_binary_merkle_tree` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/light_binary_merkle_tree-5ee27b223343b108)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test lightbinarymerkletree::test::test_generate_invalid_merkle_tree_list_len_not_pow_two ... ok
[INFO] [stdout] test lightbinarymerkletree::test::test_generate_invalid_merkle_tree_list_len_zero ... ok
[INFO] [stdout] test lightbinarymerkletree::test::test_generate_proof_invalid_leaf ... ok
[INFO] [stdout] test lightbinarymerkletree::test::test_verify_merkle_tree_any_hasher_instance ... ok
[INFO] [stderr]    Doc-tests light_binary_merkle_tree
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.38s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "711413dfaf170b12ef2f0313e9d31be80f6717f50e2e2c8ad603eb91bce8f5d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "711413dfaf170b12ef2f0313e9d31be80f6717f50e2e2c8ad603eb91bce8f5d9", kill_on_drop: false }`
[INFO] [stdout] 711413dfaf170b12ef2f0313e9d31be80f6717f50e2e2c8ad603eb91bce8f5d9