[INFO] cloning repository https://github.com/goatguy2310/rust-ml
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/goatguy2310/rust-ml" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoatguy2310%2Frust-ml", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoatguy2310%2Frust-ml'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97e7586b31915e188bc699e8f67ba1ed57008161
[INFO] checking goatguy2310/rust-ml against master#8a65ee08296b36342bf7c3cdc15312ccbc357227 for pr-142704
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoatguy2310%2Frust-ml" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/goatguy2310/rust-ml on toolchain 8a65ee08296b36342bf7c3cdc15312ccbc357227
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/goatguy2310/rust-ml
[INFO] finished tweaking git repo https://github.com/goatguy2310/rust-ml
[INFO] tweaked toml for git repo https://github.com/goatguy2310/rust-ml written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/goatguy2310/rust-ml 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" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 104d8c5546a32486f013860505920a3f0ac6975e68fd6e73da88b47e9c109dda
[INFO] running `Command { std: "docker" "start" "-a" "104d8c5546a32486f013860505920a3f0ac6975e68fd6e73da88b47e9c109dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "104d8c5546a32486f013860505920a3f0ac6975e68fd6e73da88b47e9c109dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "104d8c5546a32486f013860505920a3f0ac6975e68fd6e73da88b47e9c109dda", kill_on_drop: false }`
[INFO] [stdout] 104d8c5546a32486f013860505920a3f0ac6975e68fd6e73da88b47e9c109dda
[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" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e90101cda976321f434dbbd36a5e7167f2b14223ecee46fac0062f80eaf7fd41
[INFO] running `Command { std: "docker" "start" "-a" "e90101cda976321f434dbbd36a5e7167f2b14223ecee46fac0062f80eaf7fd41", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rust-ml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Display`, `Formatter`, `collections::HashSet`, and `self`
[INFO] [stdout]  --> src/matrix.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cell::RefCell, collections::HashSet, rc::Rc,
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |     hash::{Hash, Hasher},
[INFO] [stdout] 4 |     fmt::{self, Display, Formatter},
[INFO] [stdout]   |           ^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display`, `Formatter`, `collections::HashSet`, and `self`
[INFO] [stdout]  --> src/matrix.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cell::RefCell, collections::HashSet, rc::Rc,
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |     hash::{Hash, Hasher},
[INFO] [stdout] 4 |     fmt::{self, Display, Formatter},
[INFO] [stdout]   |           ^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matrix` is never constructed
[INFO] [stdout]  --> src/matrix.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Matrix(pub Rc<RefCell<RawMatrix>>);
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Matrix` 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: struct `RawMatrix` is never constructed
[INFO] [stdout]   --> src/matrix.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct RawMatrix {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RawMatrix` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matrix` is never constructed
[INFO] [stdout]  --> src/matrix.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Matrix(pub Rc<RefCell<RawMatrix>>);
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Matrix` 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: struct `RawMatrix` is never constructed
[INFO] [stdout]   --> src/matrix.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct RawMatrix {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RawMatrix` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.22s
[INFO] running `Command { std: "docker" "inspect" "e90101cda976321f434dbbd36a5e7167f2b14223ecee46fac0062f80eaf7fd41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e90101cda976321f434dbbd36a5e7167f2b14223ecee46fac0062f80eaf7fd41", kill_on_drop: false }`
[INFO] [stdout] e90101cda976321f434dbbd36a5e7167f2b14223ecee46fac0062f80eaf7fd41