[INFO] cloning repository https://github.com/vikram5258/linearAlgebra
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vikram5258/linearAlgebra" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvikram5258%2FlinearAlgebra", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvikram5258%2FlinearAlgebra'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 774bc65ceb2ea2a7e76de88954f5bed88439021f
[INFO] checking vikram5258/linearAlgebra against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvikram5258%2FlinearAlgebra" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/vikram5258/linearAlgebra
[INFO] finished tweaking git repo https://github.com/vikram5258/linearAlgebra
[INFO] tweaked toml for git repo https://github.com/vikram5258/linearAlgebra written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vikram5258/linearAlgebra on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/vikram5258/linearAlgebra 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 871dca0d5d4e86ad2ae77a2b49602acdd524830911e729ecbc24878f60aa5017
[INFO] running `Command { std: "docker" "start" "-a" "871dca0d5d4e86ad2ae77a2b49602acdd524830911e729ecbc24878f60aa5017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "871dca0d5d4e86ad2ae77a2b49602acdd524830911e729ecbc24878f60aa5017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "871dca0d5d4e86ad2ae77a2b49602acdd524830911e729ecbc24878f60aa5017", kill_on_drop: false }`
[INFO] [stdout] 871dca0d5d4e86ad2ae77a2b49602acdd524830911e729ecbc24878f60aa5017
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 627f02486df4316c003a4335d8c07a4060db34f99168e92dfbdf077751264bef
[INFO] running `Command { std: "docker" "start" "-a" "627f02486df4316c003a4335d8c07a4060db34f99168e92dfbdf077751264bef", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[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 linear_algebra v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/network/mod.rs:15:63
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new<'a>(layers: Vec<usize>, activation: Activation<'a>, learning_rate: f64) -> Network {
[INFO] [stdout]    |                                                               ^^                          ------- the lifetime gets resolved as `'a`
[INFO] [stdout]    |                                                               |
[INFO] [stdout]    |                                                               this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new<'a>(layers: Vec<usize>, activation: Activation<'a>, learning_rate: f64) -> Network<'a> {
[INFO] [stdout]    |                                                                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/network/mod.rs:15:63
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new<'a>(layers: Vec<usize>, activation: Activation<'a>, learning_rate: f64) -> Network {
[INFO] [stdout]    |                                                               ^^                          ------- the lifetime gets resolved as `'a`
[INFO] [stdout]    |                                                               |
[INFO] [stdout]    |                                                               this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new<'a>(layers: Vec<usize>, activation: Activation<'a>, learning_rate: f64) -> Network<'a> {
[INFO] [stdout]    |                                                                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.84s
[INFO] running `Command { std: "docker" "inspect" "627f02486df4316c003a4335d8c07a4060db34f99168e92dfbdf077751264bef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "627f02486df4316c003a4335d8c07a4060db34f99168e92dfbdf077751264bef", kill_on_drop: false }`
[INFO] [stdout] 627f02486df4316c003a4335d8c07a4060db34f99168e92dfbdf077751264bef