[INFO] cloning repository https://github.com/MSghais/flat_contract_mmr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MSghais/flat_contract_mmr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMSghais%2Fflat_contract_mmr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMSghais%2Fflat_contract_mmr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9f4423595bb66d08851ea004593afdd47a51f0e3
[INFO] fixing MSghais/flat_contract_mmr against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=end=2015,2024 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMSghais%2Fflat_contract_mmr" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MSghais/flat_contract_mmr
[INFO] finished tweaking git repo https://github.com/MSghais/flat_contract_mmr
[INFO] tweaked toml for git repo https://github.com/MSghais/flat_contract_mmr written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MSghais/flat_contract_mmr on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MSghais/flat_contract_mmr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: unused manifest key: dependencies.ink_env.dependencies
[INFO] [stderr] warning: `flat_merkle_mountain_range` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 89e51095b299b6e5e595eff918f8b1659a721961c5d9cef03b98e2fae8381574
[INFO] running `Command { std: "docker" "start" "89e51095b299b6e5e595eff918f8b1659a721961c5d9cef03b98e2fae8381574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "89e51095b299b6e5e595eff918f8b1659a721961c5d9cef03b98e2fae8381574" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89e51095b299b6e5e595eff918f8b1659a721961c5d9cef03b98e2fae8381574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "89e51095b299b6e5e595eff918f8b1659a721961c5d9cef03b98e2fae8381574" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=end=2015,2024", kill_on_drop: false }`
[INFO] [stderr] crater-edition-check: migrating to next edition
[INFO] [stderr]    Migrating Cargo.toml from 2021 edition to 2024
[INFO] [stderr] warning: Cargo.toml: unused manifest key: dependencies.ink_env.dependencies
[INFO] [stderr] warning: `flat_merkle_mountain_range` (manifest) generated 1 warning
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
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[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling libc v0.2.120
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[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking byte-slice-cast v1.2.1
[INFO] [stderr]    Compiling cc v1.0.73
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[INFO] [stderr]    Compiling num-traits v0.2.14
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[INFO] [stderr]     Checking secp256k1 v0.21.3
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[INFO] [stderr]    Compiling impl-serde v0.3.2
[INFO] [stderr]    Compiling ink_lang_ir v3.0.0-rc9
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.2
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling ink_storage_derive v3.0.0-rc9
[INFO] [stderr]    Compiling displaydoc v0.2.3
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling parity-scale-codec-derive v3.1.0
[INFO] [stderr]    Compiling scale-info-derive v2.0.0
[INFO] [stderr]    Compiling parity-scale-codec v3.1.0
[INFO] [stderr]    Compiling ink_primitives v3.0.0-rc9
[INFO] [stderr]    Compiling ink_lang_codegen v3.0.0-rc9
[INFO] [stderr]    Compiling ink_lang_macro v3.0.0-rc9
[INFO] [stderr]    Compiling pink-extension-macro v0.1.3
[INFO] [stderr]     Checking scale-info v2.0.1
[INFO] [stderr]     Checking arber v0.2.0 (/opt/rustwide/workdir/arber)
[INFO] [stderr]     Checking ink_metadata v3.0.0-rc9
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> arber/src/error.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[derive(Display, Debug, PartialEq, Eq, Clone)]
[INFO] [stdout]    |          ^------
[INFO] [stdout]    |          |
[INFO] [stdout]    |          `Display` is not local
[INFO] [stdout]    |          move the `impl` block outside of this constant `_DERIVE_Display_FOR_Error`
[INFO] [stdout] 29 | pub enum Error {
[INFO] [stdout]    |          ----- `Error` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: the derive macro `Display` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]    = note: the derive macro `Display` may come from an old version of the `displaydoc` crate, try updating your dependency with `cargo update -p displaydoc`
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]    = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout]    = note: this warning originates in the derive macro `Display` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ink_env v3.0.0-rc9
[INFO] [stderr]     Checking ink_eth_compatibility v3.0.0-rc9
[INFO] [stderr]     Checking ink_storage v3.0.0-rc9
[INFO] [stderr]     Checking ink_lang v3.0.0-rc9
[INFO] [stderr]     Checking pink-extension v0.1.5
[INFO] [stderr]     Checking flat_merkle_mountain_range v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Migrating lib.rs from 2021 edition to 2024
[INFO] [stderr] error: errors present after applying fixes to crate `fat_sample`
[INFO] [stdout] warning: unsafe attribute used without unsafe
[INFO] [stdout]   --> lib.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     #[derive(SpreadAllocate)]
[INFO] [stdout] 42 | |     pub struct MerkleFlatContract {
[INFO] [stdout] 43 | |         admin: AccountId,
[INFO] [stdout] 44 | |         attestation_pubkey: Vec<u8>,
[INFO] [stdout] ...  |
[INFO] [stdout] 66 | |     }
[INFO] [stdout]    | |_____^ usage of unsafe attribute
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2021) but is a hard error in Rust 2024!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-attributes.html>
[INFO] [stdout]    = note: `--force-warn unsafe-attr-outside-unsafe` implied by `--force-warn rust-2024-compatibility`
[INFO] [stdout] help: wrap the attribute in `unsafe(...)`
[INFO] [stdout]    |
[INFO] [stdout] 41 ~     unsafe(#[derive(SpreadAllocate)]
[INFO] [stdout] 42 |     pub struct MerkleFlatContract {
[INFO] [stdout] ...
[INFO] [stdout] 65 |   
[INFO] [stdout] 66 ~     })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  --> lib.rs
[INFO] [stderr]   = cause: error: expected item after attributes
[INFO] [stderr]              --> lib.rs:40:5
[INFO] [stderr]               |
[INFO] [stderr]            40 |     #[ink(storage)]
[INFO] [stderr]               |     ^^^^^^^^^^^^^^^
[INFO] [stderr]            
[INFO] [stderr]            
[INFO] [stderr]            error: aborting due to 1 previous error
[INFO] [stderr] help: to report this as a bug, open an issue at https://github.com/rust-lang/rust/issues, quoting the full output of this command
[INFO] [stderr] help: to possibly apply more fixes, pass in the `--broken-code` flag
[INFO] [stderr] note: original diagnostics will follow:
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 32.55s
[INFO] [stderr] crater-edition-check: flat_merkle_mountain_range v0.1.0 (/opt/rustwide/workdir) updating edition from 2021 to 2024
[INFO] [stderr] warning: Cargo.toml: unused manifest key: dependencies.ink_env.dependencies
[INFO] [stderr] warning: `flat_merkle_mountain_range` (manifest) generated 1 warning
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> arber/src/error.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[derive(Display, Debug, PartialEq, Eq, Clone)]
[INFO] [stdout]    |          ^------
[INFO] [stdout]    |          |
[INFO] [stdout]    |          `Display` is not local
[INFO] [stdout]    |          move the `impl` block outside of this constant `_DERIVE_Display_FOR_Error`
[INFO] [stdout] 29 | pub enum Error {
[INFO] [stdout]    |          ----- `Error` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: the derive macro `Display` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]    = note: the derive macro `Display` may come from an old version of the `displaydoc` crate, try updating your dependency with `cargo update -p displaydoc`
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]    = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout]    = note: this warning originates in the derive macro `Display` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking flat_merkle_mountain_range v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `__ink_dylint_Storage`
[INFO] [stdout]   --> lib.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     #[derive(SpreadAllocate)]
[INFO] [stdout] 42 | |     pub struct MerkleFlatContract {
[INFO] [stdout] 43 | |         admin: AccountId,
[INFO] [stdout] 44 | |         attestation_pubkey: Vec<u8>,
[INFO] [stdout] ...  |
[INFO] [stdout] 66 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `ink-as-dependency`, `ink_metadata`, `scale-info`, and `std`
[INFO] [stdout]    = help: consider adding `__ink_dylint_Storage` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `__ink_dylint_Constructor`
[INFO] [stdout]    --> lib.rs:87:9
[INFO] [stdout]     |
[INFO] [stdout]  87 | /         pub fn default() -> Self {
[INFO] [stdout]  88 | |             // Generate a Sr25519 key pair
[INFO] [stdout]  89 | |             let privkey = derive_sr25519_key!(b"gist-attestation-key");
[INFO] [stdout]  90 | |             let pubkey = get_public_key!(&privkey, SigType::Sr25519);
[INFO] [stdout] ...   |
[INFO] [stdout] 107 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `default`, `ink-as-dependency`, `ink_metadata`, `scale-info`, and `std`
[INFO] [stdout]     = help: consider adding `__ink_dylint_Constructor` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `__ink_dylint_Constructor`
[INFO] [stdout]    --> lib.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 | /         pub fn new_mmr() -> Self {
[INFO] [stdout] 113 | |             // Generate a Sr25519 key pair
[INFO] [stdout] 114 | |             let privkey = derive_sr25519_key!(b"gist-attestation-key");
[INFO] [stdout] 115 | |             let pubkey = get_public_key!(&privkey, SigType::Sr25519);
[INFO] [stdout] ...   |
[INFO] [stdout] 137 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `default`, `ink-as-dependency`, `ink_metadata`, `scale-info`, and `std`
[INFO] [stdout]     = help: consider adding `__ink_dylint_Constructor` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Store`
[INFO] [stdout]   --> lib.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Store,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unsafe attribute used without unsafe
[INFO] [stdout]   --> lib.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     #[derive(SpreadAllocate)]
[INFO] [stdout] 42 | |     pub struct MerkleFlatContract {
[INFO] [stdout] 43 | |         admin: AccountId,
[INFO] [stdout] 44 | |         attestation_pubkey: Vec<u8>,
[INFO] [stdout] ...  |
[INFO] [stdout] 66 | |     }
[INFO] [stdout]    | |_____^ usage of unsafe attribute
[INFO] [stdout]    |
[INFO] [stdout] help: wrap the attribute in `unsafe(...)`
[INFO] [stdout]    |
[INFO] [stdout] 41 ~     unsafe(#[derive(SpreadAllocate)]
[INFO] [stdout] 42 |     pub struct MerkleFlatContract {
[INFO] [stdout] ...
[INFO] [stdout] 65 |   
[INFO] [stdout] 66 ~     })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `__ink_dylint_Storage`
[INFO] [stdout]   --> lib.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     #[derive(SpreadAllocate)]
[INFO] [stdout] 42 | |     pub struct MerkleFlatContract {
[INFO] [stdout] 43 | |         admin: AccountId,
[INFO] [stdout] 44 | |         attestation_pubkey: Vec<u8>,
[INFO] [stdout] ...  |
[INFO] [stdout] 66 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `ink-as-dependency`, `ink_metadata`, `scale-info`, and `std`
[INFO] [stdout]    = help: consider adding `__ink_dylint_Storage` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `__ink_dylint_Constructor`
[INFO] [stdout]    --> lib.rs:87:9
[INFO] [stdout]     |
[INFO] [stdout]  87 | /         pub fn default() -> Self {
[INFO] [stdout]  88 | |             // Generate a Sr25519 key pair
[INFO] [stdout]  89 | |             let privkey = derive_sr25519_key!(b"gist-attestation-key");
[INFO] [stdout]  90 | |             let pubkey = get_public_key!(&privkey, SigType::Sr25519);
[INFO] [stdout] ...   |
[INFO] [stdout] 107 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `default`, `ink-as-dependency`, `ink_metadata`, `scale-info`, and `std`
[INFO] [stdout]     = help: consider adding `__ink_dylint_Constructor` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `__ink_dylint_Constructor`
[INFO] [stdout]    --> lib.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 | /         pub fn new_mmr() -> Self {
[INFO] [stdout] 113 | |             // Generate a Sr25519 key pair
[INFO] [stdout] 114 | |             let privkey = derive_sr25519_key!(b"gist-attestation-key");
[INFO] [stdout] 115 | |             let pubkey = get_public_key!(&privkey, SigType::Sr25519);
[INFO] [stdout] ...   |
[INFO] [stdout] 137 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `default`, `ink-as-dependency`, `ink_metadata`, `scale-info`, and `std`
[INFO] [stdout]     = help: consider adding `__ink_dylint_Constructor` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Store`
[INFO] [stdout]   --> lib.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Store,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ink_lang as ink`
[INFO] [stdout]    --> lib.rs:275:13
[INFO] [stdout]     |
[INFO] [stdout] 275 |         use ink_lang as ink;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `MerkleProof` and `hash_with_index`
[INFO] [stdout]    --> lib.rs:282:13
[INFO] [stdout]     |
[INFO] [stdout] 282 |             hash_with_index, 
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout] 283 |             MerkleProof,
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `merkle`
[INFO] [stdout]   --> lib.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |             let merkle = MerkleMountainRange::new(0, s);
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_merkle`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> lib.rs:120:17
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let mut hashes:Vec<String> = Vec::new();
[INFO] [stdout]     |                 ----^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hashes`
[INFO] [stdout]    --> lib.rs:120:17
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let mut hashes:Vec<String> = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hashes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `merkle`
[INFO] [stdout]    --> lib.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |             let merkle = MerkleMountainRange::new(0, s);
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_merkle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hashable`
[INFO] [stdout]    --> lib.rs:278:13
[INFO] [stdout]     |
[INFO] [stdout] 278 |             Hashable,
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Store`
[INFO] [stdout]    --> lib.rs:279:13
[INFO] [stdout]     |
[INFO] [stdout] 279 |             Store,
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `merkle`
[INFO] [stdout]   --> lib.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |             let merkle = MerkleMountainRange::new(0, s);
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_merkle`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> lib.rs:120:17
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let mut hashes:Vec<String> = Vec::new();
[INFO] [stdout]     |                 ----^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hashes`
[INFO] [stdout]    --> lib.rs:120:17
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let mut hashes:Vec<String> = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hashes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `merkle`
[INFO] [stdout]    --> lib.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |             let merkle = MerkleMountainRange::new(0, s);
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_merkle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flat_merkle_mountain_range` (lib) due to 1 previous error; 8 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: function `hash_values` is never used
[INFO] [stdout]    --> lib.rs:318:16
[INFO] [stdout]     |
[INFO] [stdout] 318 |         pub fn hash_values() -> Vec<String> {
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "89e51095b299b6e5e595eff918f8b1659a721961c5d9cef03b98e2fae8381574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89e51095b299b6e5e595eff918f8b1659a721961c5d9cef03b98e2fae8381574", kill_on_drop: false }`
[INFO] [stdout] 89e51095b299b6e5e595eff918f8b1659a721961c5d9cef03b98e2fae8381574
