[INFO] cloning repository https://github.com/KShivendu/smoltron
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KShivendu/smoltron" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKShivendu%2Fsmoltron", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKShivendu%2Fsmoltron'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fcb9aee49ae6da84a65c6e277b6a996ab45346f3
[INFO] building KShivendu/smoltron against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKShivendu%2Fsmoltron" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/KShivendu/smoltron
[INFO] finished tweaking git repo https://github.com/KShivendu/smoltron
[INFO] tweaked toml for git repo https://github.com/KShivendu/smoltron written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/KShivendu/smoltron 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] crate git repo https://github.com/KShivendu/smoltron 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `Device`
[INFO] [stdout]  --> src/parallelism.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use candle_core::{Device, Tensor};
[INFO] [stdout]   |                   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `local_rank`
[INFO] [stdout]   --> src/communication.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(config: &Config, local_rank: u32) -> Self {
[INFO] [stdout]    |                                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(config: &Config, _local_rank: u32) -> Self {
[INFO] [stdout]    |                                 +
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `GPUS_PER_NODE`
[INFO] [stdout]    |
[INFO] [stdout] 21 -     pub fn new(config: &Config, local_rank: u32) -> Self {
[INFO] [stdout] 21 +     pub fn new(config: &Config, communication::GPUS_PER_NODE: u32) -> Self {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grad`
[INFO] [stdout]   --> src/parallelism.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         for grad in gradients.iter_mut() {
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_grad`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rank`, `size`, `world_rank`, `world_size`, `local_rank`, and `communicator` are never read
[INFO] [stdout]   --> src/communication.rs:6:9
[INFO] [stdout]    |
[INFO] [stdout]  5 | pub struct ProcessGroup {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout]  6 |     pub rank: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]  7 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]  8 |     pub world_rank: u32,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]  9 |     pub world_size: u32,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 10 |     pub local_rank: u32,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 11 |     pub communicator: mpi::topology::SimpleCommunicator,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data_parallel_group` is never read
[INFO] [stdout]   --> src/communication.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct CommunicationManager {
[INFO] [stdout]    |            -------------------- field in this struct
[INFO] [stdout] 15 |     pub data_parallel_group: ProcessGroup,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `comm` is never read
[INFO] [stdout]  --> src/parallelism.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct DataParallel {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 8 |     comm: Arc<CommunicationManager>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `all_reduce_gradients` is never used
[INFO] [stdout]   --> src/parallelism.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl DataParallel {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn all_reduce_gradients(&self, gradients: &mut Vec<Tensor>) -> SmolResult<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `comm` and `data_parallel` are never read
[INFO] [stdout]   --> src/training.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct DistributedTrainer {
[INFO] [stdout]    |            ------------------ fields in this struct
[INFO] [stdout] 10 |     comm: Arc<CommunicationManager>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 11 |     data_parallel: DataParallel,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 24s
[INFO] running `Command { std: "docker" "inspect" "b344b18deff5892a17b436afcac3324c5c37e57c5c531e6398ccdcb70d5344d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b344b18deff5892a17b436afcac3324c5c37e57c5c531e6398ccdcb70d5344d2", kill_on_drop: false }`
[INFO] [stdout] b344b18deff5892a17b436afcac3324c5c37e57c5c531e6398ccdcb70d5344d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a03a187528756f498d669df43f9c61dc59f5e3cff6a1de44ab92922c7f516667
[INFO] running `Command { std: "docker" "start" "-a" "a03a187528756f498d669df43f9c61dc59f5e3cff6a1de44ab92922c7f516667", kill_on_drop: false }`
[INFO] [stderr]    Compiling smoltron v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Device`
[INFO] [stdout]  --> src/parallelism.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use candle_core::{Device, Tensor};
[INFO] [stdout]   |                   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `local_rank`
[INFO] [stdout]   --> src/communication.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(config: &Config, local_rank: u32) -> Self {
[INFO] [stdout]    |                                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(config: &Config, _local_rank: u32) -> Self {
[INFO] [stdout]    |                                 +
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `GPUS_PER_NODE`
[INFO] [stdout]    |
[INFO] [stdout] 21 -     pub fn new(config: &Config, local_rank: u32) -> Self {
[INFO] [stdout] 21 +     pub fn new(config: &Config, communication::GPUS_PER_NODE: u32) -> Self {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grad`
[INFO] [stdout]   --> src/parallelism.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         for grad in gradients.iter_mut() {
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_grad`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rank`, `size`, `world_rank`, `world_size`, `local_rank`, and `communicator` are never read
[INFO] [stdout]   --> src/communication.rs:6:9
[INFO] [stdout]    |
[INFO] [stdout]  5 | pub struct ProcessGroup {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout]  6 |     pub rank: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]  7 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]  8 |     pub world_rank: u32,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]  9 |     pub world_size: u32,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 10 |     pub local_rank: u32,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 11 |     pub communicator: mpi::topology::SimpleCommunicator,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data_parallel_group` is never read
[INFO] [stdout]   --> src/communication.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct CommunicationManager {
[INFO] [stdout]    |            -------------------- field in this struct
[INFO] [stdout] 15 |     pub data_parallel_group: ProcessGroup,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `comm` is never read
[INFO] [stdout]  --> src/parallelism.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct DataParallel {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 8 |     comm: Arc<CommunicationManager>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `all_reduce_gradients` is never used
[INFO] [stdout]   --> src/parallelism.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl DataParallel {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn all_reduce_gradients(&self, gradients: &mut Vec<Tensor>) -> SmolResult<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `comm` and `data_parallel` are never read
[INFO] [stdout]   --> src/training.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct DistributedTrainer {
[INFO] [stdout]    |            ------------------ fields in this struct
[INFO] [stdout] 10 |     comm: Arc<CommunicationManager>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 11 |     data_parallel: DataParallel,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "a03a187528756f498d669df43f9c61dc59f5e3cff6a1de44ab92922c7f516667", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a03a187528756f498d669df43f9c61dc59f5e3cff6a1de44ab92922c7f516667", kill_on_drop: false }`
[INFO] [stdout] a03a187528756f498d669df43f9c61dc59f5e3cff6a1de44ab92922c7f516667
