[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] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/fsmonitor-watchman.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoatguy2310%2Frust-ml/hooks/fsmonitor-watchman.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[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#f8f6997469237299c1d60814c7b9828602a1f8e4 for pr-143808
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoatguy2310%2Frust-ml" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[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-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/goatguy2310/rust-ml on toolchain f8f6997469237299c1d60814c7b9828602a1f8e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3d60b99bdf365a88ca0e5f449ac7106ce25f0da30fb795a2942b1c8e4efafbc
[INFO] running `Command { std: "docker" "start" "-a" "c3d60b99bdf365a88ca0e5f449ac7106ce25f0da30fb795a2942b1c8e4efafbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3d60b99bdf365a88ca0e5f449ac7106ce25f0da30fb795a2942b1c8e4efafbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3d60b99bdf365a88ca0e5f449ac7106ce25f0da30fb795a2942b1c8e4efafbc", kill_on_drop: false }`
[INFO] [stdout] c3d60b99bdf365a88ca0e5f449ac7106ce25f0da30fb795a2942b1c8e4efafbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3ff3397e1d457036b22c921a788714202fba3c991d826ed53118fc8710fa601
[INFO] running `Command { std: "docker" "start" "-a" "b3ff3397e1d457036b22c921a788714202fba3c991d826ed53118fc8710fa601", 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 cfg-if v1.0.0
[INFO] [stderr]     Checking byteorder v1.5.0
[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: `#[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] 
[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: `#[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] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.25s
[INFO] running `Command { std: "docker" "inspect" "b3ff3397e1d457036b22c921a788714202fba3c991d826ed53118fc8710fa601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3ff3397e1d457036b22c921a788714202fba3c991d826ed53118fc8710fa601", kill_on_drop: false }`
[INFO] [stdout] b3ff3397e1d457036b22c921a788714202fba3c991d826ed53118fc8710fa601