[INFO] cloning repository https://github.com/pranav-avn/rust_net
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pranav-avn/rust_net" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpranav-avn%2Frust_net", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpranav-avn%2Frust_net'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53fc42778bc616e92c0db14fd88f6170e20d3559
[INFO] checking pranav-avn/rust_net against master#b56aaec52bc0fa35591a872fb4aac81f606e265c for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpranav-avn%2Frust_net" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pranav-avn/rust_net
[INFO] finished tweaking git repo https://github.com/pranav-avn/rust_net
[INFO] tweaked toml for git repo https://github.com/pranav-avn/rust_net written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pranav-avn/rust_net on toolchain b56aaec52bc0fa35591a872fb4aac81f606e265c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pranav-avn/rust_net 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" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4db95d9827adf8dad023fd3634ed7164881f1062d56aa2c88c596116818b5e2
[INFO] running `Command { std: "docker" "start" "-a" "b4db95d9827adf8dad023fd3634ed7164881f1062d56aa2c88c596116818b5e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4db95d9827adf8dad023fd3634ed7164881f1062d56aa2c88c596116818b5e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4db95d9827adf8dad023fd3634ed7164881f1062d56aa2c88c596116818b5e2", kill_on_drop: false }`
[INFO] [stdout] b4db95d9827adf8dad023fd3634ed7164881f1062d56aa2c88c596116818b5e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0280cfc9d099671d5323e5347fb7c5b42634826a5cc7f3a4b3deaf913cb701cf
[INFO] running `Command { std: "docker" "start" "-a" "0280cfc9d099671d5323e5347fb7c5b42634826a5cc7f3a4b3deaf913cb701cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking rust_net v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/network.rs:24:83
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new<'a>(layers: Vec<usize>, learning_rate: f64, activation: Activation<'a>) -> Network{
[INFO] [stdout]    |                                                                                   ^^      ------- the same lifetime is hidden here
[INFO] [stdout]    |                                                                                   |
[INFO] [stdout]    |                                                                                   the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new<'a>(layers: Vec<usize>, learning_rate: f64, activation: Activation<'a>) -> Network<'a>{
[INFO] [stdout]    |                                                                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/network.rs:24:83
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new<'a>(layers: Vec<usize>, learning_rate: f64, activation: Activation<'a>) -> Network{
[INFO] [stdout]    |                                                                                   ^^      ------- the same lifetime is hidden here
[INFO] [stdout]    |                                                                                   |
[INFO] [stdout]    |                                                                                   the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new<'a>(layers: Vec<usize>, learning_rate: f64, activation: Activation<'a>) -> Network<'a>{
[INFO] [stdout]    |                                                                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.07s
[INFO] running `Command { std: "docker" "inspect" "0280cfc9d099671d5323e5347fb7c5b42634826a5cc7f3a4b3deaf913cb701cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0280cfc9d099671d5323e5347fb7c5b42634826a5cc7f3a4b3deaf913cb701cf", kill_on_drop: false }`
[INFO] [stdout] 0280cfc9d099671d5323e5347fb7c5b42634826a5cc7f3a4b3deaf913cb701cf