[INFO] cloning repository https://github.com/LiamHauchard/rust_book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LiamHauchard/rust_book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamHauchard%2Frust_book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamHauchard%2Frust_book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d5d31cee35cb110188792724c79582f2dec1e84
[INFO] testing LiamHauchard/rust_book against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamHauchard%2Frust_book" "/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/LiamHauchard/rust_book on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-2/source/Cargo.toml
[INFO] crate git repo https://github.com/LiamHauchard/rust_book already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c28732024494d680e7b54bb38e1fa2a5633dc887b2bcd309520c595edb6f1bb0
[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" "c28732024494d680e7b54bb38e1fa2a5633dc887b2bcd309520c595edb6f1bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c28732024494d680e7b54bb38e1fa2a5633dc887b2bcd309520c595edb6f1bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c28732024494d680e7b54bb38e1fa2a5633dc887b2bcd309520c595edb6f1bb0", kill_on_drop: false }`
[INFO] [stdout] c28732024494d680e7b54bb38e1fa2a5633dc887b2bcd309520c595edb6f1bb0
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 804b009e58ce4a7813f8c49db3f410bd11b9c543d76f6297076ea410845677fa
[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" "804b009e58ce4a7813f8c49db3f410bd11b9c543d76f6297076ea410845677fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `days_of_christmas`
[INFO] [stdout]   --> src/chapter_3/mod.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn days_of_christmas() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word`
[INFO] [stdout]  --> src/chapter_4/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn first_word<'a>(s: &str) -> &str {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/chapter_5/mod.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new(height: u32, width: u32) -> Rectangle {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/chapter_5/mod.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn area(&self) -> u32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]   --> src/chapter_5/mod.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn can_hold(&self, rec: &Rectangle) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "804b009e58ce4a7813f8c49db3f410bd11b9c543d76f6297076ea410845677fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "804b009e58ce4a7813f8c49db3f410bd11b9c543d76f6297076ea410845677fa", kill_on_drop: false }`
[INFO] [stdout] 804b009e58ce4a7813f8c49db3f410bd11b9c543d76f6297076ea410845677fa
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e914fd3edd8bc9f98a51cc7392a172b460a6849d03f62b9e80d95c1edf45b8c9
[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" "e914fd3edd8bc9f98a51cc7392a172b460a6849d03f62b9e80d95c1edf45b8c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `days_of_christmas`
[INFO] [stdout]   --> src/chapter_3/mod.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn days_of_christmas() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word`
[INFO] [stdout]  --> src/chapter_4/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn first_word<'a>(s: &str) -> &str {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/chapter_5/mod.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new(height: u32, width: u32) -> Rectangle {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/chapter_5/mod.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn area(&self) -> u32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]   --> src/chapter_5/mod.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn can_hold(&self, rec: &Rectangle) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "e914fd3edd8bc9f98a51cc7392a172b460a6849d03f62b9e80d95c1edf45b8c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e914fd3edd8bc9f98a51cc7392a172b460a6849d03f62b9e80d95c1edf45b8c9", kill_on_drop: false }`
[INFO] [stdout] e914fd3edd8bc9f98a51cc7392a172b460a6849d03f62b9e80d95c1edf45b8c9
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e33a4a14c84cae8c76510e83840c393bbd9df0eea78a2d372693e87ab99ae7e4
[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" "e33a4a14c84cae8c76510e83840c393bbd9df0eea78a2d372693e87ab99ae7e4", kill_on_drop: false }`
[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: associated function is never used: `new`
[INFO] [stderr]  --> src/chapter_5/mod.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(height: u32, width: u32) -> Rectangle {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `area`
[INFO] [stderr]   --> src/chapter_5/mod.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn area(&self) -> u32 {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `can_hold`
[INFO] [stderr]   --> src/chapter_5/mod.rs:16:12
[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 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_book-76708c5e2ddd843c
[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 `Command { std: "docker" "inspect" "e33a4a14c84cae8c76510e83840c393bbd9df0eea78a2d372693e87ab99ae7e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e33a4a14c84cae8c76510e83840c393bbd9df0eea78a2d372693e87ab99ae7e4", kill_on_drop: false }`
[INFO] [stdout] e33a4a14c84cae8c76510e83840c393bbd9df0eea78a2d372693e87ab99ae7e4