[INFO] cloning repository https://github.com/jonathan-s/cargo-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonathan-s/cargo-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathan-s%2Fcargo-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathan-s%2Fcargo-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81e8771f4cfb1db758bfa9e3fdf250bc4dd2d33e
[INFO] checking jonathan-s/cargo-example against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathan-s%2Fcargo-example" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonathan-s/cargo-example on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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 /workspace/builds/worker-2/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 58b092cec23a4adf1f64fe337ba7453b18ecbe535db10596d5c160c06e3c3211
[INFO] running `Command { std: "docker" "start" "-a" "58b092cec23a4adf1f64fe337ba7453b18ecbe535db10596d5c160c06e3c3211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58b092cec23a4adf1f64fe337ba7453b18ecbe535db10596d5c160c06e3c3211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58b092cec23a4adf1f64fe337ba7453b18ecbe535db10596d5c160c06e3c3211", kill_on_drop: false }`
[INFO] [stdout] 58b092cec23a4adf1f64fe337ba7453b18ecbe535db10596d5c160c06e3c3211
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0beafd7e9074b8f270fb7cc8496675c55e6e5054998c7b463c2c0022f920d1a5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0beafd7e9074b8f270fb7cc8496675c55e6e5054998c7b463c2c0022f920d1a5", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling syn v0.15.38
[INFO] [stderr]    Compiling serde v1.0.93
[INFO] [stderr]    Compiling regex v1.1.7
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[INFO] [stderr]     Checking rand_os v0.1.3
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[INFO] [stderr]     Checking time v0.1.42
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[INFO] [stderr]     Checking cargo-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clap::SubCommand`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use clap::SubCommand;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crate_`
[INFO] [stdout]   --> src/lib.rs:37:20
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn execute_example(crate_: &str, example: &str) {
[INFO] [stdout]    |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_crate_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `example`
[INFO] [stdout]   --> src/lib.rs:37:34
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn execute_example(crate_: &str, example: &str) {
[INFO] [stdout]    |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crate_`
[INFO] [stdout]   --> src/lib.rs:41:18
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn list_examples(crate_: &str) {
[INFO] [stdout]    |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_crate_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_directory`
[INFO] [stdout]   --> src/lib.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn create_directory() -> Result<&'static str, Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clap::SubCommand`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use clap::SubCommand;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crate_`
[INFO] [stdout]   --> src/lib.rs:37:20
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn execute_example(crate_: &str, example: &str) {
[INFO] [stdout]    |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_crate_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `example`
[INFO] [stdout]   --> src/lib.rs:37:34
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn execute_example(crate_: &str, example: &str) {
[INFO] [stdout]    |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crate_`
[INFO] [stdout]   --> src/lib.rs:41:18
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn list_examples(crate_: &str) {
[INFO] [stdout]    |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_crate_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_directory`
[INFO] [stdout]   --> src/lib.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn create_directory() -> Result<&'static str, Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `request_crate`
[INFO] [stdout]   --> src/lib.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn request_crate(crate_: &str) -> &str{
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `command`
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let command = &matches.subcommand;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `command`
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let command = &matches.subcommand;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 22s
[INFO] running `Command { std: "docker" "inspect" "0beafd7e9074b8f270fb7cc8496675c55e6e5054998c7b463c2c0022f920d1a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0beafd7e9074b8f270fb7cc8496675c55e6e5054998c7b463c2c0022f920d1a5", kill_on_drop: false }`
[INFO] [stdout] 0beafd7e9074b8f270fb7cc8496675c55e6e5054998c7b463c2c0022f920d1a5