[INFO] fetching crate visioncortex 0.6.1...
[INFO] checking visioncortex-0.6.1 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate visioncortex 0.6.1 into /workspace/builds/worker-51/source
[INFO] validating manifest of crates.io crate visioncortex 0.6.1 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate visioncortex 0.6.1
[INFO] finished tweaking crates.io crate visioncortex 0.6.1
[INFO] tweaked toml for crates.io crate visioncortex 0.6.1 written to /workspace/builds/worker-51/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 548c137f932eb14245a5d1fec434d342eb8fee7486bc50063d6c22b53b463007
[INFO] running `Command { std: "docker" "start" "-a" "548c137f932eb14245a5d1fec434d342eb8fee7486bc50063d6c22b53b463007", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "548c137f932eb14245a5d1fec434d342eb8fee7486bc50063d6c22b53b463007", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "548c137f932eb14245a5d1fec434d342eb8fee7486bc50063d6c22b53b463007", kill_on_drop: false }`
[INFO] [stdout] 548c137f932eb14245a5d1fec434d342eb8fee7486bc50063d6c22b53b463007
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1654c7e079d1f07584548659000170da3ada7355a56918d4b65fa2ccad281eb0
[INFO] running `Command { std: "docker" "start" "-a" "1654c7e079d1f07584548659000170da3ada7355a56918d4b65fa2ccad281eb0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking roots v0.0.6
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking flo_curves v0.3.1
[INFO] [stderr]     Checking visioncortex v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `src_pts`
[INFO] [stdout]   --> src/numeric/perspective.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     src_pts: Vec<f64>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `dst_pts`
[INFO] [stdout]   --> src/numeric/perspective.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     dst_pts: Vec<f64>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_pow_of_four`
[INFO] [stdout]    --> src/sampler.rs:152:4
[INFO] [stdout]     |
[INFO] [stdout] 152 | fn is_pow_of_four(n: usize) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pow_of_four`
[INFO] [stdout]    --> src/sampler.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn pow_of_four(mut n: usize) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `src_pts`
[INFO] [stdout]   --> src/numeric/perspective.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     src_pts: Vec<f64>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `dst_pts`
[INFO] [stdout]   --> src/numeric/perspective.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     dst_pts: Vec<f64>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_pow_of_four`
[INFO] [stdout]    --> src/sampler.rs:152:4
[INFO] [stdout]     |
[INFO] [stdout] 152 | fn is_pow_of_four(n: usize) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pow_of_four`
[INFO] [stdout]    --> src/sampler.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn pow_of_four(mut n: usize) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.87s
[INFO] running `Command { std: "docker" "inspect" "1654c7e079d1f07584548659000170da3ada7355a56918d4b65fa2ccad281eb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1654c7e079d1f07584548659000170da3ada7355a56918d4b65fa2ccad281eb0", kill_on_drop: false }`
[INFO] [stdout] 1654c7e079d1f07584548659000170da3ada7355a56918d4b65fa2ccad281eb0