[INFO] cloning repository https://github.com/rakeshbs/rusty_nanograd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rakeshbs/rusty_nanograd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frakeshbs%2Frusty_nanograd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frakeshbs%2Frusty_nanograd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2fbba007bf00a82585dc18271d188ac4d9dd492
[INFO] checking rakeshbs/rusty_nanograd against try#b32fc44666c052e7cf07ab471bfb6f9ec571902f for pr-138676
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frakeshbs%2Frusty_nanograd" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rakeshbs/rusty_nanograd on toolchain b32fc44666c052e7cf07ab471bfb6f9ec571902f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rakeshbs/rusty_nanograd
[INFO] finished tweaking git repo https://github.com/rakeshbs/rusty_nanograd
[INFO] tweaked toml for git repo https://github.com/rakeshbs/rusty_nanograd written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rakeshbs/rusty_nanograd 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" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.rand
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e687fa77bd11196a981127903f1f8af9a11856532c7298ce5455222d189186b9
[INFO] running `Command { std: "docker" "start" "-a" "e687fa77bd11196a981127903f1f8af9a11856532c7298ce5455222d189186b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e687fa77bd11196a981127903f1f8af9a11856532c7298ce5455222d189186b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e687fa77bd11196a981127903f1f8af9a11856532c7298ce5455222d189186b9", kill_on_drop: false }`
[INFO] [stdout] e687fa77bd11196a981127903f1f8af9a11856532c7298ce5455222d189186b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f1756f4188547aee9e744899a3c5fb8352ed78fd89bf70cc1e31007407a2f85
[INFO] running `Command { std: "docker" "start" "-a" "4f1756f4188547aee9e744899a3c5fb8352ed78fd89bf70cc1e31007407a2f85", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.rand
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.10
[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]     Checking rusty_nanograd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/node.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/node.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/tests.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     for i in 0..1000 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/tests.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     for i in 0..1000 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `neg` is never used
[INFO] [stdout]    --> src/node.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn neg(a: &NodeRef) -> NodeRef {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exp` is never used
[INFO] [stdout]    --> src/node.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 157 | pub fn exp(a: &NodeRef) -> NodeRef {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tanh` is never used
[INFO] [stdout]    --> src/node.rs:170:8
[INFO] [stdout]     |
[INFO] [stdout] 170 | pub fn tanh(a: &NodeRef) -> NodeRef {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `log2` is never used
[INFO] [stdout]    --> src/node.rs:209:8
[INFO] [stdout]     |
[INFO] [stdout] 209 | pub fn log2(a: &NodeRef) -> NodeRef {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `softmax` is never used
[INFO] [stdout]    --> src/node.rs:222:8
[INFO] [stdout]     |
[INFO] [stdout] 222 | pub fn softmax(a: &Vec<NodeRef>) -> Vec<NodeRef> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `neg` is never used
[INFO] [stdout]    --> src/node.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn neg(a: &NodeRef) -> NodeRef {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exp` is never used
[INFO] [stdout]    --> src/node.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 157 | pub fn exp(a: &NodeRef) -> NodeRef {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tanh` is never used
[INFO] [stdout]    --> src/node.rs:170:8
[INFO] [stdout]     |
[INFO] [stdout] 170 | pub fn tanh(a: &NodeRef) -> NodeRef {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `log2` is never used
[INFO] [stdout]    --> src/node.rs:209:8
[INFO] [stdout]     |
[INFO] [stdout] 209 | pub fn log2(a: &NodeRef) -> NodeRef {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `softmax` is never used
[INFO] [stdout]    --> src/node.rs:222:8
[INFO] [stdout]     |
[INFO] [stdout] 222 | pub fn softmax(a: &Vec<NodeRef>) -> Vec<NodeRef> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.06s
[INFO] running `Command { std: "docker" "inspect" "4f1756f4188547aee9e744899a3c5fb8352ed78fd89bf70cc1e31007407a2f85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f1756f4188547aee9e744899a3c5fb8352ed78fd89bf70cc1e31007407a2f85", kill_on_drop: false }`
[INFO] [stdout] 4f1756f4188547aee9e744899a3c5fb8352ed78fd89bf70cc1e31007407a2f85