[INFO] fetching crate merkle-log 0.0.9...
[INFO] checking merkle-log-0.0.9 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate merkle-log 0.0.9 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate merkle-log 0.0.9 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merkle-log 0.0.9
[INFO] finished tweaking crates.io crate merkle-log 0.0.9
[INFO] tweaked toml for crates.io crate merkle-log 0.0.9 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 35 packages to latest compatible versions
[INFO] [stderr]       Adding cfg_aliases v0.1.1 (latest: v0.2.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding toml_edit v0.21.1 (latest: v0.22.12)
[INFO] [stderr]       Adding winnow v0.5.40 (latest: v0.6.7)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3a0f9ada4ca6de5ed64b96b1f71ed867bb0b649d89ac193bfc0824f5a4e4502
[INFO] running `Command { std: "docker" "start" "-a" "e3a0f9ada4ca6de5ed64b96b1f71ed867bb0b649d89ac193bfc0824f5a4e4502", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3a0f9ada4ca6de5ed64b96b1f71ed867bb0b649d89ac193bfc0824f5a4e4502", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3a0f9ada4ca6de5ed64b96b1f71ed867bb0b649d89ac193bfc0824f5a4e4502", kill_on_drop: false }`
[INFO] [stdout] e3a0f9ada4ca6de5ed64b96b1f71ed867bb0b649d89ac193bfc0824f5a4e4502
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b75edb85ca49203da9dc9f66e32b8d5d378cc7faed8d9091bfcc17c3d900fbbd
[INFO] running `Command { std: "docker" "start" "-a" "b75edb85ca49203da9dc9f66e32b8d5d378cc7faed8d9091bfcc17c3d900fbbd", kill_on_drop: false }`
[INFO] [stderr]     Checking core2 v0.4.0
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking merkle-log v0.0.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]   --> src/lib.rs:35:33
[INFO] [stdout]    |
[INFO] [stdout] 35 |         collections::{BTreeMap, BTreeSet},
[INFO] [stdout]    |                                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]   --> src/lib.rs:33:40
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub use core2::io::{self, BufRead, Read, Write};
[INFO] [stdout]    |                                        ^^^^  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]   --> src/lib.rs:35:33
[INFO] [stdout]    |
[INFO] [stdout] 35 |         collections::{BTreeMap, BTreeSet},
[INFO] [stdout]    |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` is not satisfied
[INFO] [stdout]    --> src/lib.rs:438:28
[INFO] [stdout]     |
[INFO] [stdout] 438 |     fn new() -> (MemStore, TestLog) {
[INFO] [stdout]     |                            ^^^^^^^ the trait `util::Digest<[u8; 32]>` is not implemented for `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>`
[INFO] [stdout]     |
[INFO] [stdout] help: this trait has no implementations, consider adding one
[INFO] [stdout]    --> src/util.rs:124:1
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub trait Digest<N: Node>: Default {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `MerkleLog`
[INFO] [stdout]    --> src/lib.rs:91:25
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     |                         ^^^^^^^^^ required by this bound in `MerkleLog`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the function or associated item `new` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:440:28
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- function or associated item `new` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 440 |         let log = TestLog::new(&"hello world");
[INFO] [stdout]     |                            ^^^ function or associated item cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: if you're trying to build a new `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>, [u8; 32]>` consider using one of the following associated functions:
[INFO] [stdout]       MerkleLog::<D, N>::new
[INFO] [stdout]       MerkleLog::<D, N>::root_hash
[INFO] [stdout]    --> src/lib.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 |       pub fn new(entry: impl AsRef<[u8]>) -> Self {
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 374 | /     pub(crate) fn root_hash<S: Store<N>>(
[INFO] [stdout] 375 | |         leaf_id: TreeID,
[INFO] [stdout] 376 | |         leaf_node: &N,
[INFO] [stdout] 377 | |         height: u8,
[INFO] [stdout] 378 | |         in_store: &S,
[INFO] [stdout] 379 | |     ) -> Result<N, Error> {
[INFO] [stdout]     | |_________________________^
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `new`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `Bit`
[INFO] [stdout]             candidate #2: `KeyInit`
[INFO] [stdout]             candidate #3: `KeyIvInit`
[INFO] [stdout]             candidate #4: `VariableOutput`
[INFO] [stdout]             candidate #5: `VariableOutputCore`
[INFO] [stdout]             candidate #6: `sha2::Digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` is not satisfied
[INFO] [stdout]    --> src/lib.rs:440:19
[INFO] [stdout]     |
[INFO] [stdout] 440 |         let log = TestLog::new(&"hello world");
[INFO] [stdout]     |                   ^^^^^^^ the trait `util::Digest<[u8; 32]>` is not implemented for `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>`
[INFO] [stdout]     |
[INFO] [stdout] help: this trait has no implementations, consider adding one
[INFO] [stdout]    --> src/util.rs:124:1
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub trait Digest<N: Node>: Default {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `MerkleLog`
[INFO] [stdout]    --> src/lib.rs:91:25
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     |                         ^^^^^^^^^ required by this bound in `MerkleLog`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` is not satisfied
[INFO] [stdout]    --> src/lib.rs:448:24
[INFO] [stdout]     |
[INFO] [stdout] 448 |         let (_, log) = new();
[INFO] [stdout]     |                        ^^^^^ the trait `util::Digest<[u8; 32]>` is not implemented for `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>`
[INFO] [stdout]     |
[INFO] [stdout] help: this trait has no implementations, consider adding one
[INFO] [stdout]    --> src/util.rs:124:1
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub trait Digest<N: Node>: Default {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `MerkleLog`
[INFO] [stdout]    --> src/lib.rs:91:25
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     |                         ^^^^^^^^^ required by this bound in `MerkleLog`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `head_id` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:449:24
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- method `head_id` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 449 |         assert_eq!(log.head_id(), TreeID::from(0));
[INFO] [stdout]     |                        ^^^^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `len` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:450:24
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- method `len` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 450 |         assert_eq!(log.len(), 1);
[INFO] [stdout]     |                        ^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `len`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `ExactSizeIterator`
[INFO] [stdout]             candidate #2: `Len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `head` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:451:24
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- method `head` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 451 |         assert_eq!(log.head(), log.root());
[INFO] [stdout]     |                        ^^^^-- help: remove the arguments
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        field, not a method
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `root` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:451:36
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- method `root` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 451 |         assert_eq!(log.head(), log.root());
[INFO] [stdout]     |                                    ^^^^-- help: remove the arguments
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    field, not a method
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` is not satisfied
[INFO] [stdout]    --> src/lib.rs:456:36
[INFO] [stdout]     |
[INFO] [stdout] 456 |         let (mut store, mut log) = new();
[INFO] [stdout]     |                                    ^^^^^ the trait `util::Digest<[u8; 32]>` is not implemented for `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>`
[INFO] [stdout]     |
[INFO] [stdout] help: this trait has no implementations, consider adding one
[INFO] [stdout]    --> src/util.rs:124:1
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub trait Digest<N: Node>: Default {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `MerkleLog`
[INFO] [stdout]    --> src/lib.rs:91:25
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     |                         ^^^^^^^^^ required by this bound in `MerkleLog`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `prove` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:457:25
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- method `prove` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 457 |         let proof = log.prove(0, &store).unwrap();
[INFO] [stdout]     |                         ^^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `verify` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:458:21
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- method `verify` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 458 |         assert!(log.verify(0, log.head(), &proof).expect("failed to verify"));
[INFO] [stdout]     |                     ^^^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `head` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:458:35
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- method `head` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 458 |         assert!(log.verify(0, log.head(), &proof).expect("failed to verify"));
[INFO] [stdout]     |                                   ^^^^-- help: remove the arguments
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   field, not a method
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `append` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:465:17
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- method `append` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 465 |             log.append(&entry, &mut store)
[INFO] [stdout]     |                 ^^^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `append`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `Lengthen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `len` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:467:28
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- method `len` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 467 |             assert_eq!(log.len(), idx + 1);
[INFO] [stdout]     |                            ^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `len`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `ExactSizeIterator`
[INFO] [stdout]             candidate #2: `Len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `prove` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:470:18
[INFO] [stdout]     |
[INFO] [stdout] 91  |   pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     |   ------------------------------------------- method `prove` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 469 |               let proof = log
[INFO] [stdout]     |  _________________________-
[INFO] [stdout] 470 | |                 .prove(idx, &store)
[INFO] [stdout]     | |                 -^^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     | |_________________|
[INFO] [stdout]     | 
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  |   pub struct CoreWrapper<T>
[INFO] [stdout]     |   ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `verify` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:473:21
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- method `verify` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 473 |                 log.verify(idx, log.head(), &proof)
[INFO] [stdout]     |                     ^^^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `head` exists for struct `MerkleLog<CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<..., ...>, ...>, ...>, ...>>, ...>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:473:37
[INFO] [stdout]     |
[INFO] [stdout] 91  | pub struct MerkleLog<D: Digest<N>, N: Node> {
[INFO] [stdout]     | ------------------------------------------- method `head` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 473 |                 log.verify(idx, log.head(), &proof)
[INFO] [stdout]     |                                     ^^^^-- help: remove the arguments
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     field, not a method
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/digest-0.10.7/src/core_api/wrapper.rs:24:1
[INFO] [stdout]     |
[INFO] [stdout] 24  | pub struct CoreWrapper<T>
[INFO] [stdout]     | ------------------------- doesn't satisfy `_: Digest<[u8; 32]>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the full type name has been written to '/opt/rustwide/target/debug/deps/merkle_log-abff781ea48a0f9b.long-type-16776147038146850048.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] note: trait bound `CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>: util::Digest<[u8; 32]>` was not satisfied
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl<D, N> MerkleLog<D, N>
[INFO] [stdout]     |            ---------------
[INFO] [stdout] 105 | where
[INFO] [stdout] 106 |     D: Digest<N>,
[INFO] [stdout]     |        ^^^^^^^^^ unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 17 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `merkle-log` (lib test) due to 18 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b75edb85ca49203da9dc9f66e32b8d5d378cc7faed8d9091bfcc17c3d900fbbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b75edb85ca49203da9dc9f66e32b8d5d378cc7faed8d9091bfcc17c3d900fbbd", kill_on_drop: false }`
[INFO] [stdout] b75edb85ca49203da9dc9f66e32b8d5d378cc7faed8d9091bfcc17c3d900fbbd
