[INFO] updating cached repository https://github.com/LiamHauchard/rust_book
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 2d5d31cee35cb110188792724c79582f2dec1e84
[INFO] testing LiamHauchard/rust_book against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamHauchard%2Frust_book" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LiamHauchard/rust_book on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/LiamHauchard/rust_book
[INFO] finished tweaking git repo https://github.com/LiamHauchard/rust_book
[INFO] tweaked toml for git repo https://github.com/LiamHauchard/rust_book written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/LiamHauchard/rust_book already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 163ef5aafc4048020ade07851526935007dfb458bade8f7b95970be91464d9ad
[INFO] running `"docker" "start" "-a" "163ef5aafc4048020ade07851526935007dfb458bade8f7b95970be91464d9ad"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust_book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `days_of_christmas`
[INFO] [stderr]   --> src/chapter_3/mod.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn days_of_christmas() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word`
[INFO] [stderr]  --> src/chapter_4/mod.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn first_word<'a>(s: &str) -> &str {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/chapter_5/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(height: u32, width: u32) -> Rectangle {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `area`
[INFO] [stderr]   --> src/chapter_5/mod.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn area(&self) -> u32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `can_hold`
[INFO] [stderr]   --> src/chapter_5/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn can_hold(&self, rec: &Rectangle) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "163ef5aafc4048020ade07851526935007dfb458bade8f7b95970be91464d9ad"`
[INFO] running `"docker" "rm" "-f" "163ef5aafc4048020ade07851526935007dfb458bade8f7b95970be91464d9ad"`
[INFO] [stdout] 163ef5aafc4048020ade07851526935007dfb458bade8f7b95970be91464d9ad
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 942dc3497337638008cfb14c7fbb7cedea4dfb04508cd92dd412b08655725b30
[INFO] running `"docker" "start" "-a" "942dc3497337638008cfb14c7fbb7cedea4dfb04508cd92dd412b08655725b30"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust_book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `days_of_christmas`
[INFO] [stderr]   --> src/chapter_3/mod.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn days_of_christmas() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word`
[INFO] [stderr]  --> src/chapter_4/mod.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn first_word<'a>(s: &str) -> &str {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/chapter_5/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(height: u32, width: u32) -> Rectangle {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `area`
[INFO] [stderr]   --> src/chapter_5/mod.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn area(&self) -> u32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `can_hold`
[INFO] [stderr]   --> src/chapter_5/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn can_hold(&self, rec: &Rectangle) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "942dc3497337638008cfb14c7fbb7cedea4dfb04508cd92dd412b08655725b30"`
[INFO] running `"docker" "rm" "-f" "942dc3497337638008cfb14c7fbb7cedea4dfb04508cd92dd412b08655725b30"`
[INFO] [stdout] 942dc3497337638008cfb14c7fbb7cedea4dfb04508cd92dd412b08655725b30
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bc1834a169fe2f21eea1f26cd3d63cffca7946dc89c000dab48b4d448d033e06
[INFO] running `"docker" "start" "-a" "bc1834a169fe2f21eea1f26cd3d63cffca7946dc89c000dab48b4d448d033e06"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: function is never used: `days_of_christmas`
[INFO] [stderr]   --> src/chapter_3/mod.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn days_of_christmas() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word`
[INFO] [stderr]  --> src/chapter_4/mod.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn first_word<'a>(s: &str) -> &str {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/chapter_5/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(height: u32, width: u32) -> Rectangle {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `area`
[INFO] [stderr]   --> src/chapter_5/mod.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn area(&self) -> u32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `can_hold`
[INFO] [stderr]   --> src/chapter_5/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn can_hold(&self, rec: &Rectangle) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_book-0c157051b03d0b82
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "bc1834a169fe2f21eea1f26cd3d63cffca7946dc89c000dab48b4d448d033e06"`
[INFO] running `"docker" "rm" "-f" "bc1834a169fe2f21eea1f26cd3d63cffca7946dc89c000dab48b4d448d033e06"`
[INFO] [stdout] bc1834a169fe2f21eea1f26cd3d63cffca7946dc89c000dab48b4d448d033e06