[INFO] updating cached repository https://github.com/jonathan-s/cargo-example
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 81e8771f4cfb1db758bfa9e3fdf250bc4dd2d33e
[INFO] checking jonathan-s/cargo-example against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathan-s%2Fcargo-example" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonathan-s/cargo-example on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jonathan-s/cargo-example
[INFO] finished tweaking git repo https://github.com/jonathan-s/cargo-example
[INFO] tweaked toml for git repo https://github.com/jonathan-s/cargo-example written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jonathan-s/cargo-example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 34fbfbd13c7104968f3105ec1856a6e3db362008997cc76f9d43e4c17c12357a
[INFO] running `"docker" "start" "-a" "34fbfbd13c7104968f3105ec1856a6e3db362008997cc76f9d43e4c17c12357a"`
[INFO] [stderr]    Compiling backtrace v0.3.31
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking clap v2.27.1
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking flate2 v1.0.9
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking hyper v0.12.31
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking publicsuffix v1.5.2
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.18
[INFO] [stderr]     Checking cargo-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `clap::SubCommand`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use clap::SubCommand;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `crate_`
[INFO] [stderr]   --> src/lib.rs:37:20
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn execute_example(crate_: &str, example: &str) {
[INFO] [stderr]    |                    ^^^^^^ help: consider prefixing with an underscore: `_crate_`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `example`
[INFO] [stderr]   --> src/lib.rs:37:34
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn execute_example(crate_: &str, example: &str) {
[INFO] [stderr]    |                                  ^^^^^^^ help: consider prefixing with an underscore: `_example`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `crate_`
[INFO] [stderr]   --> src/lib.rs:41:18
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn list_examples(crate_: &str) {
[INFO] [stderr]    |                  ^^^^^^ help: consider prefixing with an underscore: `_crate_`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_directory`
[INFO] [stderr]   --> src/lib.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn create_directory() -> Result<&'static str, Error> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `request_crate`
[INFO] [stderr]   --> src/lib.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn request_crate(crate_: &str) -> &str{
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `clap::SubCommand`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use clap::SubCommand;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `crate_`
[INFO] [stderr]   --> src/lib.rs:37:20
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn execute_example(crate_: &str, example: &str) {
[INFO] [stderr]    |                    ^^^^^^ help: consider prefixing with an underscore: `_crate_`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `example`
[INFO] [stderr]   --> src/lib.rs:37:34
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn execute_example(crate_: &str, example: &str) {
[INFO] [stderr]    |                                  ^^^^^^^ help: consider prefixing with an underscore: `_example`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `crate_`
[INFO] [stderr]   --> src/lib.rs:41:18
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn list_examples(crate_: &str) {
[INFO] [stderr]    |                  ^^^^^^ help: consider prefixing with an underscore: `_crate_`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_directory`
[INFO] [stderr]   --> src/lib.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn create_directory() -> Result<&'static str, Error> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `command`
[INFO] [stderr]   --> src/main.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let command = &matches.subcommand;
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_command`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `command`
[INFO] [stderr]   --> src/main.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let command = &matches.subcommand;
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_command`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.66s
[INFO] running `"docker" "inspect" "34fbfbd13c7104968f3105ec1856a6e3db362008997cc76f9d43e4c17c12357a"`
[INFO] running `"docker" "rm" "-f" "34fbfbd13c7104968f3105ec1856a6e3db362008997cc76f9d43e4c17c12357a"`
[INFO] [stdout] 34fbfbd13c7104968f3105ec1856a6e3db362008997cc76f9d43e4c17c12357a