[INFO] cloning repository https://github.com/ZirionNeft/blockchain-rust-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZirionNeft/blockchain-rust-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZirionNeft%2Fblockchain-rust-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZirionNeft%2Fblockchain-rust-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de9380562bb8efeea579b1a59a9640448a35d577
[INFO] testing ZirionNeft/blockchain-rust-example against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZirionNeft%2Fblockchain-rust-example" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ZirionNeft/blockchain-rust-example
[INFO] finished tweaking git repo https://github.com/ZirionNeft/blockchain-rust-example
[INFO] tweaked toml for git repo https://github.com/ZirionNeft/blockchain-rust-example written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ZirionNeft/blockchain-rust-example on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ZirionNeft/blockchain-rust-example 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d5615ac9019b68f72465865bdbd70840f58c495c55b0195279d6173c9dbc78f
[INFO] running `Command { std: "docker" "start" "-a" "3d5615ac9019b68f72465865bdbd70840f58c495c55b0195279d6173c9dbc78f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d5615ac9019b68f72465865bdbd70840f58c495c55b0195279d6173c9dbc78f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d5615ac9019b68f72465865bdbd70840f58c495c55b0195279d6173c9dbc78f", kill_on_drop: false }`
[INFO] [stdout] 3d5615ac9019b68f72465865bdbd70840f58c495c55b0195279d6173c9dbc78f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "62c8ebffa95b7c01cc3dc94e2ee8f2ca063c8aa7dc620d35cce9b66d8dd405ca", kill_on_drop: false }`
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[INFO] [stderr]    Compiling blockchain-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `left` and `right` are never read
[INFO] [stdout]  --> src/blockchain/merkle_tree.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct MerkleNode {
[INFO] [stdout]   |            ---------- fields in this struct
[INFO] [stdout] 7 |     pub left: Option<Rc<MerkleNode>>,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 8 |     pub right: Option<Rc<MerkleNode>>,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `MerkleNode` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/blockchain/proof_of_work.rs:22:23
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn new(block: &block::Block) -> ProofOfWork {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^     ----------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn new(block: &block::Block) -> ProofOfWork<'_> {
[INFO] [stdout]    |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `Command { std: "docker" "inspect" "62c8ebffa95b7c01cc3dc94e2ee8f2ca063c8aa7dc620d35cce9b66d8dd405ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62c8ebffa95b7c01cc3dc94e2ee8f2ca063c8aa7dc620d35cce9b66d8dd405ca", kill_on_drop: false }`
[INFO] [stdout] 62c8ebffa95b7c01cc3dc94e2ee8f2ca063c8aa7dc620d35cce9b66d8dd405ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] bd16f7a3e986c9f6c24528dbeee9de612f57897a8873536c78678961e8c843ef
[INFO] running `Command { std: "docker" "start" "-a" "bd16f7a3e986c9f6c24528dbeee9de612f57897a8873536c78678961e8c843ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling blockchain-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `left` and `right` are never read
[INFO] [stdout]  --> src/blockchain/merkle_tree.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct MerkleNode {
[INFO] [stdout]   |            ---------- fields in this struct
[INFO] [stdout] 7 |     pub left: Option<Rc<MerkleNode>>,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 8 |     pub right: Option<Rc<MerkleNode>>,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `MerkleNode` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/blockchain/proof_of_work.rs:22:23
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn new(block: &block::Block) -> ProofOfWork {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^     ----------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn new(block: &block::Block) -> ProofOfWork<'_> {
[INFO] [stdout]    |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.99s
[INFO] running `Command { std: "docker" "inspect" "bd16f7a3e986c9f6c24528dbeee9de612f57897a8873536c78678961e8c843ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd16f7a3e986c9f6c24528dbeee9de612f57897a8873536c78678961e8c843ef", kill_on_drop: false }`
[INFO] [stdout] bd16f7a3e986c9f6c24528dbeee9de612f57897a8873536c78678961e8c843ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] ec84f17708105b87decf4afbadc67db5c0f2fd901b3a27e11ea138a39131ce20
[INFO] running `Command { std: "docker" "start" "-a" "ec84f17708105b87decf4afbadc67db5c0f2fd901b3a27e11ea138a39131ce20", kill_on_drop: false }`
[INFO] [stderr] warning: fields `left` and `right` are never read
[INFO] [stderr]  --> src/blockchain/merkle_tree.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct MerkleNode {
[INFO] [stderr]   |            ---------- fields in this struct
[INFO] [stderr] 7 |     pub left: Option<Rc<MerkleNode>>,
[INFO] [stderr]   |         ^^^^
[INFO] [stderr] 8 |     pub right: Option<Rc<MerkleNode>>,
[INFO] [stderr]   |         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `MerkleNode` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/blockchain/proof_of_work.rs:22:23
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn new(block: &block::Block) -> ProofOfWork {
[INFO] [stderr]    |                       ^^^^^^^^^^^^^     ----------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                       |
[INFO] [stderr]    |                       this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn new(block: &block::Block) -> ProofOfWork<'_> {
[INFO] [stderr]    |                                                    ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `blockchain-rust` (bin "blockchain-rust" test) generated 2 warnings (run `cargo fix --bin "blockchain-rust" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/blockchain_rust-3dc5e0f56a72b633)
[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" "ec84f17708105b87decf4afbadc67db5c0f2fd901b3a27e11ea138a39131ce20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec84f17708105b87decf4afbadc67db5c0f2fd901b3a27e11ea138a39131ce20", kill_on_drop: false }`
[INFO] [stdout] ec84f17708105b87decf4afbadc67db5c0f2fd901b3a27e11ea138a39131ce20