[INFO] updating cached repository https://github.com/matteocam/pay-to-sudoku-attack [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] cfc072fcdc17e10916185308edbdd232be808ad4 [INFO] testing matteocam/pay-to-sudoku-attack against beta-2020-06-03 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatteocam%2Fpay-to-sudoku-attack" "/workspace/builds/worker-4/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/matteocam/pay-to-sudoku-attack on toolchain beta-2020-06-03 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/matteocam/pay-to-sudoku-attack [INFO] finished tweaking git repo https://github.com/matteocam/pay-to-sudoku-attack [INFO] tweaked toml for git repo https://github.com/matteocam/pay-to-sudoku-attack written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/matteocam/pay-to-sudoku-attack already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] eb1adb4fa5b666aeaf07e8eb2e26dc08a5f834208811ddbf5a81edbaf063341b [INFO] running `"docker" "start" "-a" "eb1adb4fa5b666aeaf07e8eb2e26dc08a5f834208811ddbf5a81edbaf063341b"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling libc v0.2.21 [INFO] [stderr] Compiling rustc-serialize v0.3.23 [INFO] [stderr] Compiling num-traits v0.1.37 [INFO] [stderr] Compiling gcc v0.3.45 [INFO] [stderr] Compiling semver v0.1.20 [INFO] [stderr] Compiling log v0.3.7 [INFO] [stderr] Compiling matches v0.1.4 [INFO] [stderr] Compiling typeable v0.1.2 [INFO] [stderr] Compiling traitobject v0.0.1 [INFO] [stderr] Compiling httparse v1.2.2 [INFO] [stderr] Compiling language-tags v0.0.7 [INFO] [stderr] Compiling vec_map v0.4.0 [INFO] [stderr] Compiling strsim v0.4.1 [INFO] [stderr] Compiling ansi_term v0.7.5 [INFO] [stderr] Compiling bitflags v0.4.0 [INFO] [stderr] Compiling byteorder v0.4.2 [INFO] [stderr] Compiling whiteread v0.2.0 [INFO] [stderr] Compiling hex v0.1.0 [INFO] [stderr] Compiling thread-scoped v1.0.1 [INFO] [stderr] Compiling fixedbitset v0.1.6 [INFO] [stderr] Compiling hpack v0.2.0 [INFO] [stderr] Compiling clap v1.5.6 [INFO] [stderr] Compiling rand v0.3.15 [INFO] [stderr] Compiling time v0.1.36 [INFO] [stderr] Compiling num_cpus v0.2.13 [INFO] [stderr] Compiling rustc_version v0.1.7 [INFO] [stderr] Compiling solicit v0.4.4 [INFO] [stderr] Compiling miniz-sys v0.1.9 [INFO] [stderr] Compiling bzip2-sys v0.1.5 [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Compiling num-integer v0.1.34 [INFO] [stderr] Compiling unicase v1.4.0 [INFO] [stderr] Compiling num-iter v0.1.33 [INFO] [stderr] Compiling flate2 v0.2.19 [INFO] [stderr] Compiling bzip2 v0.2.4 [INFO] [stderr] Compiling num-bigint v0.1.37 [INFO] [stderr] Compiling num-complex v0.1.37 [INFO] [stderr] Compiling uuid v0.1.18 [INFO] [stderr] Compiling url v0.2.38 [INFO] [stderr] Compiling num-rational v0.1.36 [INFO] [stderr] Compiling num v0.1.37 [INFO] [stderr] Compiling serde v0.6.15 [INFO] [stderr] Compiling cookie v0.1.21 [INFO] [stderr] Compiling mime v0.1.3 [INFO] [stderr] Compiling strason v0.3.4 [INFO] [stderr] Compiling bincode v0.4.1 [INFO] [stderr] Compiling hyper v0.6.16 [INFO] [stderr] Compiling jsonrpc v0.7.6 [INFO] [stderr] Compiling pay-to-sudoku v0.0.1 (/opt/rustwide/workdir) [INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead [INFO] [stderr] --> src/main.rs:194:5 [INFO] [stderr] | [INFO] [stderr] 194 | try!(serialize_into(stream, &puzzle, Infinite)); [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead [INFO] [stderr] --> src/main.rs:198:28 [INFO] [stderr] | [INFO] [stderr] 198 | let proof: Cow<[u8]> = try!(deserialize_from(stream, Infinite)); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead [INFO] [stderr] --> src/main.rs:199:41 [INFO] [stderr] | [INFO] [stderr] 199 | let encrypted_solution: Cow<[u8]> = try!(deserialize_from(stream, Infinite)); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead [INFO] [stderr] --> src/main.rs:201:33 [INFO] [stderr] | [INFO] [stderr] 201 | let mut h_of_key: Vec = try!(deserialize_from(stream, Infinite)); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead [INFO] [stderr] --> src/main.rs:214:9 [INFO] [stderr] | [INFO] [stderr] 214 | try!(serialize_into(stream, &redeem_pubkey, Infinite)); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead [INFO] [stderr] --> src/main.rs:215:9 [INFO] [stderr] | [INFO] [stderr] 215 | try!(serialize_into(stream, &cltv_height, Infinite)); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead [INFO] [stderr] --> src/main.rs:217:38 [INFO] [stderr] | [INFO] [stderr] 217 | let solving_pubkey: String = try!(deserialize_from(stream, Infinite)); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/main.rs:15:1 [INFO] [stderr] | [INFO] [stderr] 15 | #[macro_use] extern crate jsonrpc; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Read`, `Write`, `self` [INFO] [stderr] --> src/main.rs:18:15 [INFO] [stderr] | [INFO] [stderr] 18 | use std::io::{self, Read, Write}; [INFO] [stderr] | ^^^^ ^^^^ ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `FromHex` [INFO] [stderr] --> src/main.rs:25:18 [INFO] [stderr] | [INFO] [stderr] 25 | use hex::{ToHex, FromHex}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/ffi.rs:54:32 [INFO] [stderr] | [INFO] [stderr] 54 | let closure: &mut &mut for<'a> FnMut(&'a [u8], &'a [i8]) = mem::transmute(cb); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn for<'a> FnMut(&'a [u8], &'a [i8])` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/ffi.rs:66:32 [INFO] [stderr] | [INFO] [stderr] 66 | let closure: &mut &mut for<'a> FnMut(&'a [i8], &'a [i8]) = mem::transmute(cb); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn for<'a> FnMut(&'a [i8], &'a [i8])` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/ffi.rs:73:22 [INFO] [stderr] | [INFO] [stderr] 73 | let mut cb: &mut for<'a> FnMut(&'a [u8], &'a [u8]) = &mut f; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn for<'a> FnMut(&'a [u8], &'a [u8])` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/ffi.rs:97:22 [INFO] [stderr] | [INFO] [stderr] 97 | let mut cb: &mut for<'a> FnMut(&'a [u8], &'a [u8]) = &mut f; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn for<'a> FnMut(&'a [u8], &'a [u8])` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/ffi.rs:111:22 [INFO] [stderr] | [INFO] [stderr] 111 | let mut cb: &mut for<'a> FnMut(&'a [u8], &'a [u8]) = &mut f; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn for<'a> FnMut(&'a [u8], &'a [u8])` [INFO] [stderr] [INFO] [stderr] warning: unused import: `serde` [INFO] [stderr] --> src/bitcoin.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use serde; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `ToHex` [INFO] [stderr] --> src/bitcoin.rs:8:11 [INFO] [stderr] | [INFO] [stderr] 8 | use hex::{ToHex, FromHex}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:311:28 [INFO] [stderr] | [INFO] [stderr] 311 | if (rx.lock().unwrap().try_recv().is_ok()) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `encrypted_solution` [INFO] [stderr] --> src/main.rs:179:16 [INFO] [stderr] | [INFO] [stderr] 179 | |encrypted_solution, proof| {})); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_encrypted_solution` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `proof` [INFO] [stderr] --> src/main.rs:179:36 [INFO] [stderr] | [INFO] [stderr] 179 | |encrypted_solution, proof| {})); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_proof` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:352:13 [INFO] [stderr] | [INFO] [stderr] 352 | fn from(a: bincode::serde::SerializeError) -> ProtoError { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:358:13 [INFO] [stderr] | [INFO] [stderr] 358 | fn from(a: bincode::serde::DeserializeError) -> ProtoError { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `dimension` [INFO] [stderr] --> src/sudoku.rs:15:12 [INFO] [stderr] | [INFO] [stderr] 15 | fn new(dimension: usize) -> Possible { [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dimension` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `undo` [INFO] [stderr] --> src/sudoku.rs:218:21 [INFO] [stderr] | [INFO] [stderr] 218 | let undo = cell.set(candidate); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_undo` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `res` [INFO] [stderr] --> src/bitcoin.rs:54:9 [INFO] [stderr] | [INFO] [stderr] 54 | let res = client.send_request(&request).unwrap(); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_res` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `res` [INFO] [stderr] --> src/bitcoin.rs:146:9 [INFO] [stderr] | [INFO] [stderr] 146 | let res = client.send_request(&request).unwrap(); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_res` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `res` [INFO] [stderr] --> src/bitcoin.rs:181:9 [INFO] [stderr] | [INFO] [stderr] 181 | let res = client.send_request(&request).unwrap(); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_res` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:201:9 [INFO] [stderr] | [INFO] [stderr] 201 | let mut h_of_key: Vec = try!(deserialize_from(stream, Infinite)); [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:324:13 [INFO] [stderr] | [INFO] [stderr] 324 | let mut txid; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:325:13 [INFO] [stderr] | [INFO] [stderr] 325 | let mut vout; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/sudoku.rs:97:13 [INFO] [stderr] | [INFO] [stderr] 97 | let mut grid = Sudoku::new(n); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `print` [INFO] [stderr] --> src/sudoku.rs:164:12 [INFO] [stderr] | [INFO] [stderr] 164 | pub fn print(&self) { [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `get_sudoku_from_stdin` [INFO] [stderr] --> src/util.rs:33:8 [INFO] [stderr] | [INFO] [stderr] 33 | pub fn get_sudoku_from_stdin(dimension: usize) -> Vec { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:117:9 [INFO] [stderr] | [INFO] [stderr] 117 | handle_server(&mut stream, &ctx, n, &mut rpc); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:141:21 [INFO] [stderr] | [INFO] [stderr] 141 | handle_client(&mut stream, &ctx, n, &mut rpc); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:276:9 [INFO] [stderr] | [INFO] [stderr] 276 | serialize_into(stream, &proof, Infinite); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:277:9 [INFO] [stderr] | [INFO] [stderr] 277 | serialize_into(stream, &encrypted_solution, Infinite); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:278:9 [INFO] [stderr] | [INFO] [stderr] 278 | serialize_into(stream, &h_of_key, Infinite); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:289:9 [INFO] [stderr] | [INFO] [stderr] 289 | serialize_into(stream, &solving_pubkey, Infinite); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:318:17 [INFO] [stderr] | [INFO] [stderr] 318 | tx.send(()); [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/sudoku.rs:88:9 [INFO] [stderr] | [INFO] [stderr] 88 | grid.solve(&mut rng); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: `extern` block uses type `ffi::Keypair`, which is not FFI-safe [INFO] [stderr] --> src/ffi.rs:24:12 [INFO] [stderr] | [INFO] [stderr] 24 | -> *const Keypair; [INFO] [stderr] | ^^^^^^^^^^^^^^ not FFI-safe [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(improper_ctypes)]` on by default [INFO] [stderr] = help: consider adding a member to this struct [INFO] [stderr] = note: this struct has no fields [INFO] [stderr] note: the type is defined here [INFO] [stderr] --> src/ffi.rs:11:1 [INFO] [stderr] | [INFO] [stderr] 11 | struct Keypair; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `extern` block uses type `ffi::Keypair`, which is not FFI-safe [INFO] [stderr] --> src/ffi.rs:25:27 [INFO] [stderr] | [INFO] [stderr] 25 | fn gen_proof(keypair: *const Keypair, h: *mut c_void, [INFO] [stderr] | ^^^^^^^^^^^^^^ not FFI-safe [INFO] [stderr] | [INFO] [stderr] = help: consider adding a member to this struct [INFO] [stderr] = note: this struct has no fields [INFO] [stderr] note: the type is defined here [INFO] [stderr] --> src/ffi.rs:11:1 [INFO] [stderr] | [INFO] [stderr] 11 | struct Keypair; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `extern` block uses type `ffi::Keypair`, which is not FFI-safe [INFO] [stderr] --> src/ffi.rs:30:40 [INFO] [stderr] | [INFO] [stderr] 30 | fn malicious_snark_verify(keypair: *const Keypair, [INFO] [stderr] | ^^^^^^^^^^^^^^ not FFI-safe [INFO] [stderr] | [INFO] [stderr] = help: consider adding a member to this struct [INFO] [stderr] = note: this struct has no fields [INFO] [stderr] note: the type is defined here [INFO] [stderr] --> src/ffi.rs:11:1 [INFO] [stderr] | [INFO] [stderr] 11 | struct Keypair; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `extern` block uses type `ffi::Keypair`, which is not FFI-safe [INFO] [stderr] --> src/ffi.rs:38:40 [INFO] [stderr] | [INFO] [stderr] 38 | fn prove_malicious_verify(keypair: *const Keypair, h: *mut c_void, [INFO] [stderr] | ^^^^^^^^^^^^^^ not FFI-safe [INFO] [stderr] | [INFO] [stderr] = help: consider adding a member to this struct [INFO] [stderr] = note: this struct has no fields [INFO] [stderr] note: the type is defined here [INFO] [stderr] --> src/ffi.rs:11:1 [INFO] [stderr] | [INFO] [stderr] 11 | struct Keypair; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/util.rs:64:17 [INFO] [stderr] | [INFO] [stderr] 64 | decoder.finish(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] error: linking with `cc` failed: exit code: 1 [INFO] [stderr] | [INFO] [stderr] = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.pay_to_sudoku.b2uj9wjg-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a" "/opt/rustwide/target/debug/deps/pay_to_sudoku-2a169cb3f11c487a.21dsw70088zyck0s.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/bzip2-sys-a582c41fb94b4443/out" "-L" "/opt/rustwide/target/debug/build/miniz-sys-30c6d592c21b504d/out" "-L" "/opt/rustwide/target/debug/build/rust-crypto-6a180eef070a1c7d/out" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lmysnark" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libjsonrpc-0c389e2d80af2f58.rlib" "/opt/rustwide/target/debug/deps/libhyper-895663cbe7e17eaa.rlib" "/opt/rustwide/target/debug/deps/libmime-ebf727f9ca29720a.rlib" "/opt/rustwide/target/debug/deps/liblanguage_tags-b9b336dd9e8d3f83.rlib" "/opt/rustwide/target/debug/deps/libsolicit-7f8fc5493d3e59cd.rlib" "/opt/rustwide/target/debug/deps/libhpack-b8af964a0b305c5d.rlib" "/opt/rustwide/target/debug/deps/liblog-55ac63227a15286c.rlib" "/opt/rustwide/target/debug/deps/libtypeable-6d5a09322ca14bf8.rlib" "/opt/rustwide/target/debug/deps/libtraitobject-6102f31cce9458e6.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-15410472cc7e9876.rlib" "/opt/rustwide/target/debug/deps/libhttparse-801cc54990aec075.rlib" "/opt/rustwide/target/debug/deps/libunicase-c45155e65b25c51a.rlib" "/opt/rustwide/target/debug/deps/libcookie-12591e40b72357ac.rlib" "/opt/rustwide/target/debug/deps/liburl-00711ddc55adaa5f.rlib" "/opt/rustwide/target/debug/deps/libmatches-259632e05161f354.rlib" "/opt/rustwide/target/debug/deps/libuuid-b00d8a360528e2ba.rlib" "/opt/rustwide/target/debug/deps/libcrypto-030bcd7e1db9e0fc.rlib" "/opt/rustwide/target/debug/deps/libtime-35c7d59c2fe0d8fd.rlib" "/opt/rustwide/target/debug/deps/libstrason-f133f9648be50b38.rlib" "/opt/rustwide/target/debug/deps/libencoding-566409fbc35fb506.rlib" "/opt/rustwide/target/debug/deps/libencoding_index_tradchinese-7d45a52858254192.rlib" "/opt/rustwide/target/debug/deps/libencoding_index_simpchinese-8f2b000131f4e997.rlib" "/opt/rustwide/target/debug/deps/libencoding_index_japanese-2c48ed99459c91f9.rlib" "/opt/rustwide/target/debug/deps/libencoding_index_korean-d0f278eac986af64.rlib" "/opt/rustwide/target/debug/deps/libencoding_index_singlebyte-114d11db8e56368e.rlib" "/opt/rustwide/target/debug/deps/libflate2-f0f0dacc017830c3.rlib" "/opt/rustwide/target/debug/deps/libminiz_sys-e57696a0ee98a820.rlib" "/opt/rustwide/target/debug/deps/libclap-a2f31505545e05e0.rlib" "/opt/rustwide/target/debug/deps/libvec_map-12c2b3e7a1227477.rlib" "/opt/rustwide/target/debug/deps/libbitflags-540c32a9e4e80bc8.rlib" "/opt/rustwide/target/debug/deps/libansi_term-4d3abe52c4c0b486.rlib" "/opt/rustwide/target/debug/deps/libstrsim-3875f99e6cc5d647.rlib" "/opt/rustwide/target/debug/deps/libhex-86237932fa6fa381.rlib" "/opt/rustwide/target/debug/deps/libthread_scoped-d39dff386d42dd9e.rlib" "/opt/rustwide/target/debug/deps/libbincode-4b54bc9c88dede21.rlib" "/opt/rustwide/target/debug/deps/libserde-f8d03777856f2765.rlib" "/opt/rustwide/target/debug/deps/libnum-19f3f7cd386becd1.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-0a9b0a4af4a6f814.rlib" "/opt/rustwide/target/debug/deps/libnum_bigint-78aa2b93db0a3ca0.rlib" "/opt/rustwide/target/debug/deps/librand-db7629980bcfda5c.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-2d8e582ded63b563.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-a2993eac31a8e0a1.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-6871aa9f35289079.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-3ebdb40bc75a059f.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-13fd0af70921e123.rlib" "/opt/rustwide/target/debug/deps/librustc_serialize-0f26786e08f08f62.rlib" "/opt/rustwide/target/debug/deps/liblibc-69a41634a1b7721e.rlib" "/opt/rustwide/target/debug/deps/libwhiteread-053e1dfcd877fb08.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-44f8eb3d0b2fad61.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-abc626f09920d361.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-546e83c8973f1a65.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-12768dfc68674934.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-e06867e4497f2ee8.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-cbc579f43f6df57b.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7abd6d5a7ebf9a23.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-46423c7bc03bd327.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-fc3773ed7bc68f07.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-9cdc98176efd27e2.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-02d88502a763e06b.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-8cdc9d38dd6cd3ce.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-336f7d63e72901ef.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-57917b1be5233117.rlib" "-Wl,-Bdynamic" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil" [INFO] [stderr] = note: /usr/bin/ld: cannot find -lmysnark [INFO] [stderr] collect2: error: ld returned 1 exit status [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error; 46 warnings emitted [INFO] [stderr] [INFO] [stderr] error: could not compile `pay-to-sudoku`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "eb1adb4fa5b666aeaf07e8eb2e26dc08a5f834208811ddbf5a81edbaf063341b"` [INFO] running `"docker" "rm" "-f" "eb1adb4fa5b666aeaf07e8eb2e26dc08a5f834208811ddbf5a81edbaf063341b"` [INFO] [stdout] eb1adb4fa5b666aeaf07e8eb2e26dc08a5f834208811ddbf5a81edbaf063341b