[INFO] cloning repository https://github.com/Shindou-L/myrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Shindou-L/myrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShindou-L%2Fmyrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShindou-L%2Fmyrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e4f76f1eb78c6dd9c4c46859506a6fe300864b01
[INFO] checking Shindou-L/myrust against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShindou-L%2Fmyrust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Shindou-L/myrust on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Shindou-L/myrust
[INFO] finished tweaking git repo https://github.com/Shindou-L/myrust
[INFO] tweaked toml for git repo https://github.com/Shindou-L/myrust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Shindou-L/myrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0546bc040bd80c13ffd14a49b33bf2b798c63628c17c47bdbcf01983e5f9512e
[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" "0546bc040bd80c13ffd14a49b33bf2b798c63628c17c47bdbcf01983e5f9512e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0546bc040bd80c13ffd14a49b33bf2b798c63628c17c47bdbcf01983e5f9512e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0546bc040bd80c13ffd14a49b33bf2b798c63628c17c47bdbcf01983e5f9512e", kill_on_drop: false }`
[INFO] [stdout] 0546bc040bd80c13ffd14a49b33bf2b798c63628c17c47bdbcf01983e5f9512e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 4459c73ca395f07b423f7e50acbe846c80253d88cc5ded9cf2fb0a03acdd8703
[INFO] running `Command { std: "docker" "start" "-a" "4459c73ca395f07b423f7e50acbe846c80253d88cc5ded9cf2fb0a03acdd8703", kill_on_drop: false }`
[INFO] [stderr]     Checking myrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | 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: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | 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 variable: `file`
[INFO] [stdout]  --> src/file.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let file = match file {
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `maptest`
[INFO] [stdout]  --> src/map.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn maptest() {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]  --> src/file.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let file = match file {
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `openfile`
[INFO] [stdout]  --> src/file.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn openfile(path:&str) {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/file.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file_simple`
[INFO] [stdout]   --> src/file.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn read_username_from_file_simple() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file_simple2`
[INFO] [stdout]   --> src/file.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn read_username_from_file_simple2() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `strtest`
[INFO] [stdout]  --> src/str.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn strtest() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_err`
[INFO] [stdout]   --> src/mache.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn match_err() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `maptest`
[INFO] [stdout]  --> src/map.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn maptest() {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `openfile`
[INFO] [stdout]  --> src/file.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn openfile(path:&str) {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/file.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file_simple`
[INFO] [stdout]   --> src/file.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn read_username_from_file_simple() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file_simple2`
[INFO] [stdout]   --> src/file.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn read_username_from_file_simple2() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `strtest`
[INFO] [stdout]  --> src/str.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn strtest() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_err`
[INFO] [stdout]   --> src/mache.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn match_err() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "4459c73ca395f07b423f7e50acbe846c80253d88cc5ded9cf2fb0a03acdd8703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4459c73ca395f07b423f7e50acbe846c80253d88cc5ded9cf2fb0a03acdd8703", kill_on_drop: false }`
[INFO] [stdout] 4459c73ca395f07b423f7e50acbe846c80253d88cc5ded9cf2fb0a03acdd8703