[INFO] cloning repository https://github.com/shrinjoy979/cpi-contract [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shrinjoy979/cpi-contract" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshrinjoy979%2Fcpi-contract", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshrinjoy979%2Fcpi-contract'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d51d9656de04570ee6293ed5a9e69276d9d139d9 [INFO] checking shrinjoy979/cpi-contract/d51d9656de04570ee6293ed5a9e69276d9d139d9 against master#c797096598b80ba4a40397ad7e91584fcd3df5f1 for pr-146377 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshrinjoy979%2Fcpi-contract" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] [stderr] Updating files: 92% (848/914) Updating files: 93% (851/914) Updating files: 94% (860/914) Updating files: 95% (869/914) Updating files: 96% (878/914) Updating files: 97% (887/914) Updating files: 98% (896/914) Updating files: 99% (905/914) Updating files: 100% (914/914) Updating files: 100% (914/914), done. [INFO] started tweaking git repo https://github.com/shrinjoy979/cpi-contract [INFO] finished tweaking git repo https://github.com/shrinjoy979/cpi-contract [INFO] tweaked toml for git repo https://github.com/shrinjoy979/cpi-contract written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/shrinjoy979/cpi-contract on toolchain c797096598b80ba4a40397ad7e91584fcd3df5f1 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c797096598b80ba4a40397ad7e91584fcd3df5f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/shrinjoy979/cpi-contract 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" "+c797096598b80ba4a40397ad7e91584fcd3df5f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c797096598b80ba4a40397ad7e91584fcd3df5f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6d4e2a9cc511c050a6ec409394f04f240958ffc181be5a01b44c10e649f6ce23 [INFO] running `Command { std: "docker" "start" "-a" "6d4e2a9cc511c050a6ec409394f04f240958ffc181be5a01b44c10e649f6ce23", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6d4e2a9cc511c050a6ec409394f04f240958ffc181be5a01b44c10e649f6ce23", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6d4e2a9cc511c050a6ec409394f04f240958ffc181be5a01b44c10e649f6ce23", kill_on_drop: false }` [INFO] [stdout] 6d4e2a9cc511c050a6ec409394f04f240958ffc181be5a01b44c10e649f6ce23 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c797096598b80ba4a40397ad7e91584fcd3df5f1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3905eae6cbb17c511a46eac7e45fc2c42d3400968534cf855dedf45431411e13 [INFO] running `Command { std: "docker" "start" "-a" "3905eae6cbb17c511a46eac7e45fc2c42d3400968534cf855dedf45431411e13", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.172 [INFO] [stderr] Checking ahash v0.8.12 [INFO] [stderr] Compiling zeroize_derive v1.4.2 [INFO] [stderr] Checking serde v1.0.219 [INFO] [stderr] Compiling ark-ff-macros v0.4.2 [INFO] [stderr] Compiling bumpalo v3.17.0 [INFO] [stderr] Compiling libsecp256k1 v0.6.0 [INFO] [stderr] Compiling proc-macro-crate v3.3.0 [INFO] [stderr] Compiling solana-frozen-abi-macro v1.18.26 [INFO] [stderr] Compiling bytemuck_derive v1.9.3 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Compiling solana-sdk-macro v1.18.26 [INFO] [stderr] Compiling num-derive v0.4.2 [INFO] [stderr] Checking hashbrown v0.13.2 [INFO] [stderr] Compiling wasm-bindgen-backend v0.2.100 [INFO] [stderr] Checking borsh v0.10.4 [INFO] [stderr] Checking zeroize v1.3.0 [INFO] [stderr] Compiling borsh-derive v1.5.7 [INFO] [stderr] Compiling jobserver v0.1.33 [INFO] [stderr] Compiling cc v1.2.24 [INFO] [stderr] Compiling wasm-bindgen-macro-support v0.2.100 [INFO] [stderr] Checking bytemuck v1.23.0 [INFO] [stderr] Checking getrandom v0.2.16 [INFO] [stderr] Checking getrandom v0.1.16 [INFO] [stderr] Checking memmap2 v0.5.10 [INFO] [stderr] Checking borsh v1.5.7 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking ahash v0.7.8 [INFO] [stderr] Compiling wasm-bindgen-macro v0.2.100 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Compiling blake3 v1.8.2 [INFO] [stderr] Compiling solana-program v1.18.26 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand_xoshiro v0.6.0 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking hashbrown v0.11.2 [INFO] [stderr] Checking wasm-bindgen v0.2.100 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking borsh v0.9.3 [INFO] [stderr] Checking generic-array v0.14.7 [INFO] [stderr] Checking serde_bytes v0.11.17 [INFO] [stderr] Checking bv v0.11.1 [INFO] [stderr] Checking im v15.1.0 [INFO] [stderr] Checking bitflags v2.9.1 [INFO] [stderr] Checking serde_json v1.0.140 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking ark-std v0.4.0 [INFO] [stderr] Checking block-buffer v0.10.4 [INFO] [stderr] Checking crypto-common v0.1.6 [INFO] [stderr] Checking digest v0.9.0 [INFO] [stderr] Checking crypto-mac v0.8.0 [INFO] [stderr] Checking block-buffer v0.9.0 [INFO] [stderr] Checking pbkdf2 v0.4.0 [INFO] [stderr] Checking hmac v0.8.1 [INFO] [stderr] Checking sha2 v0.9.9 [INFO] [stderr] Checking libsecp256k1-core v0.2.2 [INFO] [stderr] Checking curve25519-dalek v3.2.1 [INFO] [stderr] Checking digest v0.10.7 [INFO] [stderr] Checking hmac-drbg v0.3.0 [INFO] [stderr] Checking ark-serialize v0.4.2 [INFO] [stderr] Checking sha2 v0.10.9 [INFO] [stderr] Checking sha3 v0.10.8 [INFO] [stderr] Checking tiny-bip39 v0.8.2 [INFO] [stderr] Checking ark-ff v0.4.2 [INFO] [stderr] Checking solana-frozen-abi v1.18.26 [INFO] [stderr] Checking ark-poly v0.4.2 [INFO] [stderr] Checking ark-ec v0.4.2 [INFO] [stderr] Checking ark-bn254 v0.4.0 [INFO] [stderr] Checking light-poseidon v0.2.0 [INFO] [stderr] Checking cpi-in-solana v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unexpected `cfg` condition value: `custom-heap` [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | entrypoint!(process_instruction); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: no expected values for `feature` [INFO] [stdout] = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate [INFO] [stdout] = help: try referring to `$crate::custom_heap_default` crate for guidance on how handle this unexpected cfg [INFO] [stdout] = help: the macro `$crate::custom_heap_default` may come from an old version of the `solana_program` crate, try updating your dependency with `cargo update -p solana_program` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] = note: this warning originates in the macro `$crate::custom_heap_default` which comes from the expansion of the macro `entrypoint` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `solana` [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | entrypoint!(process_instruction); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `target_os` are: `aix`, `amdhsa`, `android`, `cuda`, `cygwin`, `dragonfly`, `emscripten`, `espidf`, `freebsd`, `fuchsia`, `haiku`, `helenos`, `hermit`, `horizon`, `hurd`, `illumos`, `ios`, `l4re`, `linux`, `lynxos178`, `macos`, `managarm`, `motor`, `netbsd`, `none`, `nto`, `nuttx`, `openbsd`, `psp`, `psx`, `qurt`, `redox`, `rtems`, `solaris`, and `solid_asp3` and 14 more [INFO] [stdout] = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate [INFO] [stdout] = help: try referring to `$crate::custom_heap_default` crate for guidance on how handle this unexpected cfg [INFO] [stdout] = help: the macro `$crate::custom_heap_default` may come from an old version of the `solana_program` crate, try updating your dependency with `cargo update -p solana_program` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: this warning originates in the macro `$crate::custom_heap_default` which comes from the expansion of the macro `entrypoint` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `custom-heap` [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | entrypoint!(process_instruction); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: no expected values for `feature` [INFO] [stdout] = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate [INFO] [stdout] = help: try referring to `$crate::custom_heap_default` crate for guidance on how handle this unexpected cfg [INFO] [stdout] = help: the macro `$crate::custom_heap_default` may come from an old version of the `solana_program` crate, try updating your dependency with `cargo update -p solana_program` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] = note: this warning originates in the macro `$crate::custom_heap_default` which comes from the expansion of the macro `entrypoint` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `custom-panic` [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | entrypoint!(process_instruction); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: no expected values for `feature` [INFO] [stdout] = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate [INFO] [stdout] = help: try referring to `$crate::custom_panic_default` crate for guidance on how handle this unexpected cfg [INFO] [stdout] = help: the macro `$crate::custom_panic_default` may come from an old version of the `solana_program` crate, try updating your dependency with `cargo update -p solana_program` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: this warning originates in the macro `$crate::custom_panic_default` which comes from the expansion of the macro `entrypoint` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `solana` [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | entrypoint!(process_instruction); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `target_os` are: `aix`, `amdhsa`, `android`, `cuda`, `cygwin`, `dragonfly`, `emscripten`, `espidf`, `freebsd`, `fuchsia`, `haiku`, `helenos`, `hermit`, `horizon`, `hurd`, `illumos`, `ios`, `l4re`, `linux`, `lynxos178`, `macos`, `managarm`, `motor`, `netbsd`, `none`, `nto`, `nuttx`, `openbsd`, `psp`, `psx`, `qurt`, `redox`, `rtems`, `solaris`, and `solid_asp3` and 14 more [INFO] [stdout] = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate [INFO] [stdout] = help: try referring to `$crate::custom_panic_default` crate for guidance on how handle this unexpected cfg [INFO] [stdout] = help: the macro `$crate::custom_panic_default` may come from an old version of the `solana_program` crate, try updating your dependency with `cargo update -p solana_program` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: this warning originates in the macro `$crate::custom_panic_default` which comes from the expansion of the macro `entrypoint` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `solana` [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | entrypoint!(process_instruction); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `target_os` are: `aix`, `amdhsa`, `android`, `cuda`, `cygwin`, `dragonfly`, `emscripten`, `espidf`, `freebsd`, `fuchsia`, `haiku`, `helenos`, `hermit`, `horizon`, `hurd`, `illumos`, `ios`, `l4re`, `linux`, `lynxos178`, `macos`, `managarm`, `motor`, `netbsd`, `none`, `nto`, `nuttx`, `openbsd`, `psp`, `psx`, `qurt`, `redox`, `rtems`, `solaris`, and `solid_asp3` and 14 more [INFO] [stdout] = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate [INFO] [stdout] = help: try referring to `$crate::custom_heap_default` crate for guidance on how handle this unexpected cfg [INFO] [stdout] = help: the macro `$crate::custom_heap_default` may come from an old version of the `solana_program` crate, try updating your dependency with `cargo update -p solana_program` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: this warning originates in the macro `$crate::custom_heap_default` which comes from the expansion of the macro `entrypoint` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `custom-panic` [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | entrypoint!(process_instruction); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: no expected values for `feature` [INFO] [stdout] = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate [INFO] [stdout] = help: try referring to `$crate::custom_panic_default` crate for guidance on how handle this unexpected cfg [INFO] [stdout] = help: the macro `$crate::custom_panic_default` may come from an old version of the `solana_program` crate, try updating your dependency with `cargo update -p solana_program` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: this warning originates in the macro `$crate::custom_panic_default` which comes from the expansion of the macro `entrypoint` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `solana` [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | entrypoint!(process_instruction); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `target_os` are: `aix`, `amdhsa`, `android`, `cuda`, `cygwin`, `dragonfly`, `emscripten`, `espidf`, `freebsd`, `fuchsia`, `haiku`, `helenos`, `hermit`, `horizon`, `hurd`, `illumos`, `ios`, `l4re`, `linux`, `lynxos178`, `macos`, `managarm`, `motor`, `netbsd`, `none`, `nto`, `nuttx`, `openbsd`, `psp`, `psx`, `qurt`, `redox`, `rtems`, `solaris`, and `solid_asp3` and 14 more [INFO] [stdout] = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate [INFO] [stdout] = help: try referring to `$crate::custom_panic_default` crate for guidance on how handle this unexpected cfg [INFO] [stdout] = help: the macro `$crate::custom_panic_default` may come from an old version of the `solana_program` crate, try updating your dependency with `cargo update -p solana_program` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: this warning originates in the macro `$crate::custom_panic_default` which comes from the expansion of the macro `entrypoint` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `program_id` [INFO] [stdout] --> src/lib.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | program_id: &Pubkey, [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_program_id` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `instruction_data` [INFO] [stdout] --> src/lib.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | instruction_data: &[u8] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instruction_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `program_id` [INFO] [stdout] --> src/lib.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | program_id: &Pubkey, [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_program_id` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `instruction_data` [INFO] [stdout] --> src/lib.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | instruction_data: &[u8] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instruction_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | counter.serialize(&mut *data_account.data.borrow_mut()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 36 | let _ = counter.serialize(&mut *data_account.data.borrow_mut()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | counter.serialize(&mut *data_account.data.borrow_mut()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 36 | let _ = counter.serialize(&mut *data_account.data.borrow_mut()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.76s [INFO] running `Command { std: "docker" "inspect" "3905eae6cbb17c511a46eac7e45fc2c42d3400968534cf855dedf45431411e13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3905eae6cbb17c511a46eac7e45fc2c42d3400968534cf855dedf45431411e13", kill_on_drop: false }` [INFO] [stdout] 3905eae6cbb17c511a46eac7e45fc2c42d3400968534cf855dedf45431411e13