[INFO] fetching crate zyx-nn 0.1.1...
[INFO] building zyx-nn-0.1.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate zyx-nn 0.1.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate zyx-nn 0.1.1
[INFO] finished tweaking crates.io crate zyx-nn 0.1.1
[INFO] tweaked toml for crates.io crate zyx-nn 0.1.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zyx-nn 0.1.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87a9cc95707d3d70fcccb93be049ac37c1afcd042e756973e7b409a908388211
[INFO] running `Command { std: "docker" "start" "-a" "87a9cc95707d3d70fcccb93be049ac37c1afcd042e756973e7b409a908388211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87a9cc95707d3d70fcccb93be049ac37c1afcd042e756973e7b409a908388211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87a9cc95707d3d70fcccb93be049ac37c1afcd042e756973e7b409a908388211", kill_on_drop: false }`
[INFO] [stdout] 87a9cc95707d3d70fcccb93be049ac37c1afcd042e756973e7b409a908388211
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 136a00193215f926f232b309404461543f754e29d4668d75960b479ee21fe536
[INFO] running `Command { std: "docker" "start" "-a" "136a00193215f926f232b309404461543f754e29d4668d75960b479ee21fe536", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling zyx-core v0.1.1
[INFO] [stderr]    Compiling zyx-nn v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `LayerNormInit` is never used
[INFO] [stdout]   --> src/layer_norm.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub trait LayerNormInit: Backend {
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `BatchNormInit` is never used
[INFO] [stdout]   --> src/batch_norm.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub trait BatchNormInit: Backend {
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "136a00193215f926f232b309404461543f754e29d4668d75960b479ee21fe536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "136a00193215f926f232b309404461543f754e29d4668d75960b479ee21fe536", kill_on_drop: false }`
[INFO] [stdout] 136a00193215f926f232b309404461543f754e29d4668d75960b479ee21fe536
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d52c5449c71562e3fc76e646d8a842fd580160c10b40401ae4143b96cc08b3c7
[INFO] running `Command { std: "docker" "start" "-a" "d52c5449c71562e3fc76e646d8a842fd580160c10b40401ae4143b96cc08b3c7", kill_on_drop: false }`
[INFO] [stdout] warning: trait `LayerNormInit` is never used
[INFO] [stdout]   --> src/layer_norm.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub trait LayerNormInit: Backend {
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `BatchNormInit` is never used
[INFO] [stdout]   --> src/batch_norm.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub trait BatchNormInit: Backend {
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling zyx-nn v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `LayerNormInit` is never used
[INFO] [stdout]   --> src/layer_norm.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub trait LayerNormInit: Backend {
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `BatchNormInit` is never used
[INFO] [stdout]   --> src/batch_norm.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub trait BatchNormInit: Backend {
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "d52c5449c71562e3fc76e646d8a842fd580160c10b40401ae4143b96cc08b3c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d52c5449c71562e3fc76e646d8a842fd580160c10b40401ae4143b96cc08b3c7", kill_on_drop: false }`
[INFO] [stdout] d52c5449c71562e3fc76e646d8a842fd580160c10b40401ae4143b96cc08b3c7