[INFO] fetching crate synap 0.1.1...
[INFO] building synap-0.1.1 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate synap 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate synap 0.1.1
[INFO] finished tweaking crates.io crate synap 0.1.1
[INFO] tweaked toml for crates.io crate synap 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate synap 0.1.1 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate synap 0.1.1 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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 653bf45e9e99499f3d181867c75a20b2dd3a1a826b8faa3db6cf1bc597dac1ba
[INFO] running `Command { std: "docker" "start" "-a" "653bf45e9e99499f3d181867c75a20b2dd3a1a826b8faa3db6cf1bc597dac1ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "653bf45e9e99499f3d181867c75a20b2dd3a1a826b8faa3db6cf1bc597dac1ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "653bf45e9e99499f3d181867c75a20b2dd3a1a826b8faa3db6cf1bc597dac1ba", kill_on_drop: false }`
[INFO] [stdout] 653bf45e9e99499f3d181867c75a20b2dd3a1a826b8faa3db6cf1bc597dac1ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e422c0428beff582ccedf1acb615f196a9f623e825ba80e5579f1e9b71880e0
[INFO] running `Command { std: "docker" "start" "-a" "2e422c0428beff582ccedf1acb615f196a9f623e825ba80e5579f1e9b71880e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-complex v0.4.1
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling synap v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:85:45
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub fn gauss_elim_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> Matrix<T> {
[INFO] [stdout]    |                                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]    --> src/algebra/algorithms.rs:101:39
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub fn rank_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> usize {
[INFO] [stdout]     |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]    --> src/algebra/algorithms.rs:105:41
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub fn gram_schmidt<T: FieldElement<T>>(matrix: &Matrix<T>) -> Matrix<T> {
[INFO] [stdout]     |                                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:97:38
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn det_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> T {
[INFO] [stdout]    |                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:89:44
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn lu_decomp_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> (Matrix<T>, Matrix<T>) {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:93:44
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub fn qr_decomp_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> (Matrix<T>, Matrix<T>) {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Nn` is never constructed
[INFO] [stdout]  --> src/nn/nn.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Nn {}
[INFO] [stdout]   |        ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/nn/nn.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Nn {
[INFO] [stdout]   | ------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn new() -> Nn {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "2e422c0428beff582ccedf1acb615f196a9f623e825ba80e5579f1e9b71880e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e422c0428beff582ccedf1acb615f196a9f623e825ba80e5579f1e9b71880e0", kill_on_drop: false }`
[INFO] [stdout] 2e422c0428beff582ccedf1acb615f196a9f623e825ba80e5579f1e9b71880e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 950afcd33a6763f917057cfda4e93489ac487a53575d2b85387b824a54855870
[INFO] running `Command { std: "docker" "start" "-a" "950afcd33a6763f917057cfda4e93489ac487a53575d2b85387b824a54855870", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:85:45
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub fn gauss_elim_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> Matrix<T> {
[INFO] [stdout]    |                                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]    --> src/algebra/algorithms.rs:101:39
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub fn rank_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> usize {
[INFO] [stdout]     |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]    --> src/algebra/algorithms.rs:105:41
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub fn gram_schmidt<T: FieldElement<T>>(matrix: &Matrix<T>) -> Matrix<T> {
[INFO] [stdout]     |                                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:97:38
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn det_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> T {
[INFO] [stdout]    |                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:89:44
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn lu_decomp_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> (Matrix<T>, Matrix<T>) {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:93:44
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub fn qr_decomp_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> (Matrix<T>, Matrix<T>) {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Nn` is never constructed
[INFO] [stdout]  --> src/nn/nn.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Nn {}
[INFO] [stdout]   |        ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/nn/nn.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Nn {
[INFO] [stdout]   | ------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn new() -> Nn {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling synap v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::nn::*`
[INFO] [stdout]   --> src/nn/nn.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use crate::nn::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:85:45
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub fn gauss_elim_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> Matrix<T> {
[INFO] [stdout]    |                                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:89:44
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn lu_decomp_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> (Matrix<T>, Matrix<T>) {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:93:44
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub fn qr_decomp_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> (Matrix<T>, Matrix<T>) {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/algebra/algorithms.rs:97:38
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn det_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> T {
[INFO] [stdout]    |                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]    --> src/algebra/algorithms.rs:101:39
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub fn rank_naive<T: FieldElement<T>>(matrix: &Matrix<T>) -> usize {
[INFO] [stdout]     |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]    --> src/algebra/algorithms.rs:105:41
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub fn gram_schmidt<T: FieldElement<T>>(matrix: &Matrix<T>) -> Matrix<T> {
[INFO] [stdout]     |                                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Nn` is never constructed
[INFO] [stdout]  --> src/nn/nn.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Nn {}
[INFO] [stdout]   |        ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/nn/nn.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Nn {
[INFO] [stdout]   | ------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn new() -> Nn {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "950afcd33a6763f917057cfda4e93489ac487a53575d2b85387b824a54855870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "950afcd33a6763f917057cfda4e93489ac487a53575d2b85387b824a54855870", kill_on_drop: false }`
[INFO] [stdout] 950afcd33a6763f917057cfda4e93489ac487a53575d2b85387b824a54855870
