[INFO] cloning repository https://github.com/toastedbreadandomelette/nn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/toastedbreadandomelette/nn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftoastedbreadandomelette%2Fnn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftoastedbreadandomelette%2Fnn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d48eafe1a05c995b50b0329deea97df14b9a2496
[INFO] checking toastedbreadandomelette/nn against try#7dabc88a3b6768751847baeb49983f31ac5f20e2 for pr-155945
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftoastedbreadandomelette%2Fnn" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/toastedbreadandomelette/nn
[INFO] finished tweaking git repo https://github.com/toastedbreadandomelette/nn
[INFO] tweaked toml for git repo https://github.com/toastedbreadandomelette/nn written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/toastedbreadandomelette/nn on toolchain 7dabc88a3b6768751847baeb49983f31ac5f20e2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/toastedbreadandomelette/nn 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" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/toastedbreadandomelette/vector-rs`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e33c8d26a8d1827341f0f613b8ef60e73c40ebd46eb3f4bab089afd2addec19
[INFO] running `Command { std: "docker" "start" "-a" "0e33c8d26a8d1827341f0f613b8ef60e73c40ebd46eb3f4bab089afd2addec19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e33c8d26a8d1827341f0f613b8ef60e73c40ebd46eb3f4bab089afd2addec19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e33c8d26a8d1827341f0f613b8ef60e73c40ebd46eb3f4bab089afd2addec19", kill_on_drop: false }`
[INFO] [stdout] 0e33c8d26a8d1827341f0f613b8ef60e73c40ebd46eb3f4bab089afd2addec19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9586ec9f443f91747ee778f5789d86f165ebf11dfded2e1bf566cbca9157dc38
[INFO] running `Command { std: "docker" "start" "-a" "9586ec9f443f91747ee778f5789d86f165ebf11dfded2e1bf566cbca9157dc38", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking vector v0.1.0 (https://github.com/toastedbreadandomelette/vector-rs?branch=master#d8f2e1e5)
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]     Checking nn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/cell.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     String(String),
[INFO] [stdout]   |     ------ ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Cell` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 6 -     String(String),
[INFO] [stdout] 6 +     String(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/cell.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Number(i64),
[INFO] [stdout]   |     ------ ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Cell` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 8 -     Number(i64),
[INFO] [stdout] 8 +     Number(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/cell.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Decimal(f64),
[INFO] [stdout]    |     ------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Cell` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 -     Decimal(f64),
[INFO] [stdout] 10 +     Decimal(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter_col` is never used
[INFO] [stdout]   --> src/dframe.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl DataFrame {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 66 |     pub fn iter_col(&self, col: &str) -> Option<DataFrameColumnIterator> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataFrameColumnIterator` is never constructed
[INFO] [stdout]  --> src/iter/mod.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct DataFrameColumnIterator<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/iter/mod.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl<'a> DataFrameColumnIterator<'a> {
[INFO] [stdout]    | ------------------------------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn new(data_frame: &'a [Cell], col_size: usize, offset: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dframe.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn iter(&self) -> DataFrameIterator {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn iter(&self) -> DataFrameIterator<'_> {
[INFO] [stdout]    |                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dframe.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn iter_col(&self, col: &str) -> Option<DataFrameColumnIterator> {
[INFO] [stdout]    |                     ^^^^^                       ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn iter_col(&self, col: &str) -> Option<DataFrameColumnIterator<'_>> {
[INFO] [stdout]    |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/cell.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     String(String),
[INFO] [stdout]   |     ------ ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Cell` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 6 -     String(String),
[INFO] [stdout] 6 +     String(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/cell.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Number(i64),
[INFO] [stdout]   |     ------ ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Cell` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 8 -     Number(i64),
[INFO] [stdout] 8 +     Number(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/cell.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Decimal(f64),
[INFO] [stdout]    |     ------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Cell` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 -     Decimal(f64),
[INFO] [stdout] 10 +     Decimal(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter_col` is never used
[INFO] [stdout]   --> src/dframe.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl DataFrame {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 66 |     pub fn iter_col(&self, col: &str) -> Option<DataFrameColumnIterator> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataFrameColumnIterator` is never constructed
[INFO] [stdout]  --> src/iter/mod.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct DataFrameColumnIterator<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/iter/mod.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl<'a> DataFrameColumnIterator<'a> {
[INFO] [stdout]    | ------------------------------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn new(data_frame: &'a [Cell], col_size: usize, offset: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dframe.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn iter(&self) -> DataFrameIterator {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn iter(&self) -> DataFrameIterator<'_> {
[INFO] [stdout]    |                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dframe.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn iter_col(&self, col: &str) -> Option<DataFrameColumnIterator> {
[INFO] [stdout]    |                     ^^^^^                       ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn iter_col(&self, col: &str) -> Option<DataFrameColumnIterator<'_>> {
[INFO] [stdout]    |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "9586ec9f443f91747ee778f5789d86f165ebf11dfded2e1bf566cbca9157dc38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9586ec9f443f91747ee778f5789d86f165ebf11dfded2e1bf566cbca9157dc38", kill_on_drop: false }`
[INFO] [stdout] 9586ec9f443f91747ee778f5789d86f165ebf11dfded2e1bf566cbca9157dc38
