[INFO] cloning repository https://github.com/bitrate657/Rust_The_Book_chapter_8_practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bitrate657/Rust_The_Book_chapter_8_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitrate657%2FRust_The_Book_chapter_8_practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitrate657%2FRust_The_Book_chapter_8_practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a0915390e2062bf32550613b7d8460d062e12714
[INFO] testing bitrate657/Rust_The_Book_chapter_8_practice against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitrate657%2FRust_The_Book_chapter_8_practice" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bitrate657/Rust_The_Book_chapter_8_practice on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bitrate657/Rust_The_Book_chapter_8_practice
[INFO] finished tweaking git repo https://github.com/bitrate657/Rust_The_Book_chapter_8_practice
[INFO] tweaked toml for git repo https://github.com/bitrate657/Rust_The_Book_chapter_8_practice written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/bitrate657/Rust_The_Book_chapter_8_practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 677a34e7195a8a353d1093159389eb7008fb8fd002ec29078e54a86a0c89f943
[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" "677a34e7195a8a353d1093159389eb7008fb8fd002ec29078e54a86a0c89f943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "677a34e7195a8a353d1093159389eb7008fb8fd002ec29078e54a86a0c89f943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "677a34e7195a8a353d1093159389eb7008fb8fd002ec29078e54a86a0c89f943", kill_on_drop: false }`
[INFO] [stdout] 677a34e7195a8a353d1093159389eb7008fb8fd002ec29078e54a86a0c89f943
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afe029b7903f0c808dd0ffcafc5e5db741a3ce930aa0b2d37f22b07b5e0ed9af
[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" "afe029b7903f0c808dd0ffcafc5e5db741a3ce930aa0b2d37f22b07b5e0ed9af", kill_on_drop: false }`
[INFO] [stderr]    Compiling chapter_8_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `HashMap` is imported redundantly
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     use std::collections::HashMap;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 | use std::collections::HashMap;
[INFO] [stdout]    |     ------------------------- the item `HashMap` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `company` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct company {
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Company`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]    --> src/main.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |     while true {
[INFO] [stdout]     |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/main.rs:75:14
[INFO] [stdout]    |
[INFO] [stdout] 75 |         for (key, value) in &mut self.employee {
[INFO] [stdout]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.50s
[INFO] running `Command { std: "docker" "inspect" "afe029b7903f0c808dd0ffcafc5e5db741a3ce930aa0b2d37f22b07b5e0ed9af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afe029b7903f0c808dd0ffcafc5e5db741a3ce930aa0b2d37f22b07b5e0ed9af", kill_on_drop: false }`
[INFO] [stdout] afe029b7903f0c808dd0ffcafc5e5db741a3ce930aa0b2d37f22b07b5e0ed9af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--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] 5e31f027a83951da74955b3c7eb0bc50b70e6523bfab81d1e70923b47bd02be7
[INFO] running `Command { std: "docker" "start" "-a" "5e31f027a83951da74955b3c7eb0bc50b70e6523bfab81d1e70923b47bd02be7", kill_on_drop: false }`
[INFO] [stderr]    Compiling chapter_8_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `HashMap` is imported redundantly
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     use std::collections::HashMap;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 | use std::collections::HashMap;
[INFO] [stdout]    |     ------------------------- the item `HashMap` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `company` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct company {
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Company`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]    --> src/main.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |     while true {
[INFO] [stdout]     |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/main.rs:75:14
[INFO] [stdout]    |
[INFO] [stdout] 75 |         for (key, value) in &mut self.employee {
[INFO] [stdout]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "5e31f027a83951da74955b3c7eb0bc50b70e6523bfab81d1e70923b47bd02be7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e31f027a83951da74955b3c7eb0bc50b70e6523bfab81d1e70923b47bd02be7", kill_on_drop: false }`
[INFO] [stdout] 5e31f027a83951da74955b3c7eb0bc50b70e6523bfab81d1e70923b47bd02be7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f00b52cd78002ae81f7a19423fcc9b22b3211d1b7cc2c74d4baf0819f5caa794
[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" "f00b52cd78002ae81f7a19423fcc9b22b3211d1b7cc2c74d4baf0819f5caa794", kill_on_drop: false }`
[INFO] [stderr] warning: the item `HashMap` is imported redundantly
[INFO] [stderr]   --> src/main.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     use std::collections::HashMap;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 53 | use std::collections::HashMap;
[INFO] [stderr]    |     ------------------------- the item `HashMap` is already imported here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `company` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 | struct company {
[INFO] [stderr]    |        ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Company`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]    --> src/main.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     while true {
[INFO] [stderr]     |     ^^^^^^^^^^ help: use `loop`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(while_true)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/main.rs:75:14
[INFO] [stderr]    |
[INFO] [stderr] 75 |         for (key, value) in &mut self.employee {
[INFO] [stderr]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `chapter_8_practice` (bin "chapter_8_practice" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chapter_8_practice-304241aa53fb184d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f00b52cd78002ae81f7a19423fcc9b22b3211d1b7cc2c74d4baf0819f5caa794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f00b52cd78002ae81f7a19423fcc9b22b3211d1b7cc2c74d4baf0819f5caa794", kill_on_drop: false }`
[INFO] [stdout] f00b52cd78002ae81f7a19423fcc9b22b3211d1b7cc2c74d4baf0819f5caa794