[INFO] cloning repository https://github.com/qharo/micrograd.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qharo/micrograd.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqharo%2Fmicrograd.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqharo%2Fmicrograd.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5b0c0c4a1672099e0c2cf5983f292e36191b9971
[INFO] building qharo/micrograd.rs against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqharo%2Fmicrograd.rs" "/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/qharo/micrograd.rs on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/qharo/micrograd.rs
[INFO] finished tweaking git repo https://github.com/qharo/micrograd.rs
[INFO] tweaked toml for git repo https://github.com/qharo/micrograd.rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/qharo/micrograd.rs 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "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-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 216e43e779226f20050a18ec013cf15ff063eb05592e433ca49611cd25c04ffd
[INFO] running `Command { std: "docker" "start" "-a" "216e43e779226f20050a18ec013cf15ff063eb05592e433ca49611cd25c04ffd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "216e43e779226f20050a18ec013cf15ff063eb05592e433ca49611cd25c04ffd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "216e43e779226f20050a18ec013cf15ff063eb05592e433ca49611cd25c04ffd", kill_on_drop: false }`
[INFO] [stdout] 216e43e779226f20050a18ec013cf15ff063eb05592e433ca49611cd25c04ffd
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b564db71a2792f22da030746c40e1eb9f2bd1bf2ea6de93960df0d90938c4a8
[INFO] running `Command { std: "docker" "start" "-a" "6b564db71a2792f22da030746c40e1eb9f2bd1bf2ea6de93960df0d90938c4a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling libc v0.2.164
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling syn v2.0.87
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling ember v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Layer` and `Neuron`
[INFO] [stdout]  --> src/main.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::grad::{Neuron, Layer, MLP, Node};
[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/grad.rs:209:13
[INFO] [stdout]     |
[INFO] [stdout] 209 |         for i in 1..=n_out {
[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: field `n_in` is never read
[INFO] [stdout]    --> src/grad.rs:202:5
[INFO] [stdout]     |
[INFO] [stdout] 201 | pub struct Layer{
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 202 |     n_in: i64,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Layer` 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: fields `n_in` and `n_outs` are never read
[INFO] [stdout]    --> src/grad.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 244 | pub struct MLP{
[INFO] [stdout]     |            --- fields in this struct
[INFO] [stdout] 245 |     n_in: i64,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 246 |     n_outs: Vec<i64>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MLP` 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 9.13s
[INFO] running `Command { std: "docker" "inspect" "6b564db71a2792f22da030746c40e1eb9f2bd1bf2ea6de93960df0d90938c4a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b564db71a2792f22da030746c40e1eb9f2bd1bf2ea6de93960df0d90938c4a8", kill_on_drop: false }`
[INFO] [stdout] 6b564db71a2792f22da030746c40e1eb9f2bd1bf2ea6de93960df0d90938c4a8
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f0550b71905ea231e95bf860e0010f9ca95d62e6150cb9cc0eef43a90b4d030
[INFO] running `Command { std: "docker" "start" "-a" "7f0550b71905ea231e95bf860e0010f9ca95d62e6150cb9cc0eef43a90b4d030", kill_on_drop: false }`
[INFO] [stderr]    Compiling ember v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Layer` and `Neuron`
[INFO] [stdout]  --> src/main.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::grad::{Neuron, Layer, MLP, Node};
[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/grad.rs:209:13
[INFO] [stdout]     |
[INFO] [stdout] 209 |         for i in 1..=n_out {
[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: field `n_in` is never read
[INFO] [stdout]    --> src/grad.rs:202:5
[INFO] [stdout]     |
[INFO] [stdout] 201 | pub struct Layer{
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 202 |     n_in: i64,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Layer` 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: fields `n_in` and `n_outs` are never read
[INFO] [stdout]    --> src/grad.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 244 | pub struct MLP{
[INFO] [stdout]     |            --- fields in this struct
[INFO] [stdout] 245 |     n_in: i64,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 246 |     n_outs: Vec<i64>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MLP` 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 `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "7f0550b71905ea231e95bf860e0010f9ca95d62e6150cb9cc0eef43a90b4d030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f0550b71905ea231e95bf860e0010f9ca95d62e6150cb9cc0eef43a90b4d030", kill_on_drop: false }`
[INFO] [stdout] 7f0550b71905ea231e95bf860e0010f9ca95d62e6150cb9cc0eef43a90b4d030