[INFO] cloning repository https://github.com/suryansh9315/rust_examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/suryansh9315/rust_examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuryansh9315%2Frust_examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuryansh9315%2Frust_examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e011e724a599c3cae111b5ce63c397224091e89
[INFO] checking suryansh9315/rust_examples against try#b047d5f4496a7526d91d0dddea494c05853f2a7b for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuryansh9315%2Frust_examples" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/suryansh9315/rust_examples
[INFO] finished tweaking git repo https://github.com/suryansh9315/rust_examples
[INFO] tweaked toml for git repo https://github.com/suryansh9315/rust_examples written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/suryansh9315/rust_examples on toolchain b047d5f4496a7526d91d0dddea494c05853f2a7b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/suryansh9315/rust_examples 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" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking suryansh9315/rust_examples against try#b047d5f4496a7526d91d0dddea494c05853f2a7b for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuryansh9315%2Frust_examples" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/suryansh9315/rust_examples
[INFO] finished tweaking git repo https://github.com/suryansh9315/rust_examples
[INFO] tweaked toml for git repo https://github.com/suryansh9315/rust_examples written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/suryansh9315/rust_examples on toolchain b047d5f4496a7526d91d0dddea494c05853f2a7b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/suryansh9315/rust_examples 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" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc309123cd3cab4516fb2c6e482cda7a39ae35dca39332fca08e10d3433782b5
[INFO] running `Command { std: "docker" "start" "-a" "bc309123cd3cab4516fb2c6e482cda7a39ae35dca39332fca08e10d3433782b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc309123cd3cab4516fb2c6e482cda7a39ae35dca39332fca08e10d3433782b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc309123cd3cab4516fb2c6e482cda7a39ae35dca39332fca08e10d3433782b5", kill_on_drop: false }`
[INFO] [stdout] bc309123cd3cab4516fb2c6e482cda7a39ae35dca39332fca08e10d3433782b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a6795e17de59facf0f451a205b94008363a7cf29b564909bf60ceec6349f6cd
[INFO] running `Command { std: "docker" "start" "-a" "5a6795e17de59facf0f451a205b94008363a7cf29b564909bf60ceec6349f6cd", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]     Checking crc32fast v1.4.2
[INFO] [stderr]     Checking miniz_oxide v0.8.0
[INFO] [stderr]     Checking flate2 v1.0.33
[INFO] [stderr]     Checking rust_examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rec`
[INFO] [stdout]   --> src/generics.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let rec = Rectangle{height: 1, width: 1};
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_rec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cuboid`
[INFO] [stdout]   --> src/generics.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let cuboid = Cuboid{breadth: 5, depth: 3.45, length: 34};
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_cuboid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `commands` is never used
[INFO] [stdout]  --> src/os_commands.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn commands() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_os` is never used
[INFO] [stdout]  --> src/os_commands.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn check_os() {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_dir` is never used
[INFO] [stdout]   --> src/os_commands.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn list_dir(dir: &str){
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `error_handling` is never used
[INFO] [stdout]  --> src/error_handling.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn error_handling() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_dir` is never used
[INFO] [stdout]   --> src/error_handling.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn list_dir(dir: &str){
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]  --> src/generics.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Result<T, E> {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `option_example` is never used
[INFO] [stdout]   --> src/generics.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn option_example(x: i32) -> Option<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/generics.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Rectangle<T> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cuboid` is never constructed
[INFO] [stdout]   --> src/generics.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Cuboid<T, U, V> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `struct_example` is never used
[INFO] [stdout]   --> src/generics.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn struct_example() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_of_numbers` is never used
[INFO] [stdout]   --> src/generics.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn sum_of_numbers<T: std::ops::Mul<Output = T>>(num1: T, num2: T) -> T {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Vehicle` is never used
[INFO] [stdout]  --> src/traits.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Vehicle {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Car` is never constructed
[INFO] [stdout]   --> src/traits.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Car {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rec`
[INFO] [stdout]   --> src/generics.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let rec = Rectangle{height: 1, width: 1};
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_rec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cuboid`
[INFO] [stdout]   --> src/generics.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let cuboid = Cuboid{breadth: 5, depth: 3.45, length: 34};
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_cuboid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Truck` is never constructed
[INFO] [stdout]   --> src/traits.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct Truck {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traits_example` is never used
[INFO] [stdout]   --> src/traits.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn traits_example() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello` is never used
[INFO] [stdout]  --> src/api/miner.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn hello() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compress` is never used
[INFO] [stdout]  --> src/compress/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn compress() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `commands` is never used
[INFO] [stdout]  --> src/os_commands.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn commands() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_os` is never used
[INFO] [stdout]  --> src/os_commands.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn check_os() {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_dir` is never used
[INFO] [stdout]   --> src/os_commands.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn list_dir(dir: &str){
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `error_handling` is never used
[INFO] [stdout]  --> src/error_handling.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn error_handling() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_dir` is never used
[INFO] [stdout]   --> src/error_handling.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn list_dir(dir: &str){
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]  --> src/generics.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Result<T, E> {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `option_example` is never used
[INFO] [stdout]   --> src/generics.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn option_example(x: i32) -> Option<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/generics.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Rectangle<T> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cuboid` is never constructed
[INFO] [stdout]   --> src/generics.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Cuboid<T, U, V> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `struct_example` is never used
[INFO] [stdout]   --> src/generics.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn struct_example() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_of_numbers` is never used
[INFO] [stdout]   --> src/generics.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn sum_of_numbers<T: std::ops::Mul<Output = T>>(num1: T, num2: T) -> T {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Vehicle` is never used
[INFO] [stdout]  --> src/traits.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Vehicle {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Car` is never constructed
[INFO] [stdout]   --> src/traits.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Car {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Truck` is never constructed
[INFO] [stdout]   --> src/traits.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct Truck {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traits_example` is never used
[INFO] [stdout]   --> src/traits.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn traits_example() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello` is never used
[INFO] [stdout]  --> src/api/miner.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn hello() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compress` is never used
[INFO] [stdout]  --> src/compress/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn compress() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "5a6795e17de59facf0f451a205b94008363a7cf29b564909bf60ceec6349f6cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a6795e17de59facf0f451a205b94008363a7cf29b564909bf60ceec6349f6cd", kill_on_drop: false }`
[INFO] [stdout] 5a6795e17de59facf0f451a205b94008363a7cf29b564909bf60ceec6349f6cd