[INFO] cloning repository https://github.com/w4ngzhen/learn_burn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/w4ngzhen/learn_burn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fw4ngzhen%2Flearn_burn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fw4ngzhen%2Flearn_burn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7901fe6b293ee0ffbd0af8066d29df0898fdb07
[INFO] testing w4ngzhen/learn_burn against master#e9385f9eea0221ef295a188d49d16f8f5189abf1 for pr-146098
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fw4ngzhen%2Flearn_burn" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/w4ngzhen/learn_burn
[INFO] finished tweaking git repo https://github.com/w4ngzhen/learn_burn
[INFO] tweaked toml for git repo https://github.com/w4ngzhen/learn_burn written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/w4ngzhen/learn_burn on toolchain e9385f9eea0221ef295a188d49d16f8f5189abf1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/w4ngzhen/learn_burn 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" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "fetch" "--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]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac8556740af625451fd1ca7a584d294a3bd147b2b36842f816408bcb14ec8f0c
[INFO] running `Command { std: "docker" "start" "-a" "ac8556740af625451fd1ca7a584d294a3bd147b2b36842f816408bcb14ec8f0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac8556740af625451fd1ca7a584d294a3bd147b2b36842f816408bcb14ec8f0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac8556740af625451fd1ca7a584d294a3bd147b2b36842f816408bcb14ec8f0c", kill_on_drop: false }`
[INFO] [stdout] ac8556740af625451fd1ca7a584d294a3bd147b2b36842f816408bcb14ec8f0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 297bf8d6a356101b056bc75f3391a7b27509a33dd0fd7afe0f93702e13c06f39
[INFO] running `Command { std: "docker" "start" "-a" "297bf8d6a356101b056bc75f3391a7b27509a33dd0fd7afe0f93702e13c06f39", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_burn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "297bf8d6a356101b056bc75f3391a7b27509a33dd0fd7afe0f93702e13c06f39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "297bf8d6a356101b056bc75f3391a7b27509a33dd0fd7afe0f93702e13c06f39", kill_on_drop: false }`
[INFO] [stdout] 297bf8d6a356101b056bc75f3391a7b27509a33dd0fd7afe0f93702e13c06f39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 245ce58be17895b49612195c76481440a6955140289fdfad82dbf87305e6f1a7
[INFO] running `Command { std: "docker" "start" "-a" "245ce58be17895b49612195c76481440a6955140289fdfad82dbf87305e6f1a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.97
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[INFO] [stderr]    Compiling wgpu-core-deps-windows-linux-android v25.0.0
[INFO] [stderr]    Compiling cubecl v0.6.0
[INFO] [stderr]    Compiling burn-tensor v0.18.0
[INFO] [stderr]    Compiling burn-ir v0.18.0
[INFO] [stderr]    Compiling burn-core v0.18.0
[INFO] [stderr]    Compiling burn-fusion v0.18.0
[INFO] [stderr]    Compiling burn-cubecl-fusion v0.18.0
[INFO] [stderr]    Compiling burn-cubecl v0.18.0
[INFO] [stderr]    Compiling burn-wgpu v0.18.0
[INFO] [stderr]    Compiling burn v0.18.0
[INFO] [stderr]    Compiling learn_burn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> examples/linear_regression/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let x = Tensor::<MyBackend, 2>::from_data(x_data, &device);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> examples/linear_regression/main.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let y = Tensor::<MyBackend, 1>::from_data(y_data, &device);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2m 03s
[INFO] running `Command { std: "docker" "inspect" "245ce58be17895b49612195c76481440a6955140289fdfad82dbf87305e6f1a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "245ce58be17895b49612195c76481440a6955140289fdfad82dbf87305e6f1a7", kill_on_drop: false }`
[INFO] [stdout] 245ce58be17895b49612195c76481440a6955140289fdfad82dbf87305e6f1a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e306cd182cb3b2ed9f9e53527c81d556aade250d5997d9cdc1e4bfe522d9fbe1
[INFO] running `Command { std: "docker" "start" "-a" "e306cd182cb3b2ed9f9e53527c81d556aade250d5997d9cdc1e4bfe522d9fbe1", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> examples/linear_regression/main.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let x = Tensor::<MyBackend, 2>::from_data(x_data, &device);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> examples/linear_regression/main.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let y = Tensor::<MyBackend, 1>::from_data(y_data, &device);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: `learn_burn` (example "linear_regression") generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/learn_burn-64d76cfb802c085c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e306cd182cb3b2ed9f9e53527c81d556aade250d5997d9cdc1e4bfe522d9fbe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e306cd182cb3b2ed9f9e53527c81d556aade250d5997d9cdc1e4bfe522d9fbe1", kill_on_drop: false }`
[INFO] [stdout] e306cd182cb3b2ed9f9e53527c81d556aade250d5997d9cdc1e4bfe522d9fbe1