[INFO] fetching crate rust-lang-chapter14-tutorial 0.1.0...
[INFO] testing rust-lang-chapter14-tutorial-0.1.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate rust-lang-chapter14-tutorial 0.1.0 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate rust-lang-chapter14-tutorial 0.1.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-lang-chapter14-tutorial 0.1.0
[INFO] finished tweaking crates.io crate rust-lang-chapter14-tutorial 0.1.0
[INFO] tweaked toml for crates.io crate rust-lang-chapter14-tutorial 0.1.0 written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate crates.io crate rust-lang-chapter14-tutorial 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b92afef4db10cf6de73252f352d1b94fa4bce8d3f7d4ad3623df4356afed6a5
[INFO] running `Command { std: "docker" "start" "-a" "6b92afef4db10cf6de73252f352d1b94fa4bce8d3f7d4ad3623df4356afed6a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b92afef4db10cf6de73252f352d1b94fa4bce8d3f7d4ad3623df4356afed6a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b92afef4db10cf6de73252f352d1b94fa4bce8d3f7d4ad3623df4356afed6a5", kill_on_drop: false }`
[INFO] [stdout] 6b92afef4db10cf6de73252f352d1b94fa4bce8d3f7d4ad3623df4356afed6a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0304c3889b4d1d2b16cd516273ee5bd99eceef424290990666677d836f2494cf
[INFO] running `Command { std: "docker" "start" "-a" "0304c3889b4d1d2b16cd516273ee5bd99eceef424290990666677d836f2494cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-lang-chapter14-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib.rs:26:34
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "0304c3889b4d1d2b16cd516273ee5bd99eceef424290990666677d836f2494cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0304c3889b4d1d2b16cd516273ee5bd99eceef424290990666677d836f2494cf", kill_on_drop: false }`
[INFO] [stdout] 0304c3889b4d1d2b16cd516273ee5bd99eceef424290990666677d836f2494cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2dd199f6ebf108a05bc369798ca9dc5d42dff312567e3bcdf4ff7d2a08f4dc82
[INFO] running `Command { std: "docker" "start" "-a" "2dd199f6ebf108a05bc369798ca9dc5d42dff312567e3bcdf4ff7d2a08f4dc82", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib.rs:26:34
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rust-lang-chapter14-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib.rs:26:34
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2dd199f6ebf108a05bc369798ca9dc5d42dff312567e3bcdf4ff7d2a08f4dc82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dd199f6ebf108a05bc369798ca9dc5d42dff312567e3bcdf4ff7d2a08f4dc82", kill_on_drop: false }`
[INFO] [stdout] 2dd199f6ebf108a05bc369798ca9dc5d42dff312567e3bcdf4ff7d2a08f4dc82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4055c31e681d45d9f49f186c556a1efd5c50d8fe11ca84ab1c83048ea30ffad4
[INFO] running `Command { std: "docker" "start" "-a" "4055c31e681d45d9f49f186c556a1efd5c50d8fe11ca84ab1c83048ea30ffad4", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `c1`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/lib.rs:26:16
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 26 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout] 
[INFO] [stderr]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c2`
[INFO] [stderr]   --> src/lib.rs:26:34
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stderr]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-lang-chapter14-tutorial` (lib) generated 2 warnings
[INFO] [stderr] warning: `rust-lang-chapter14-tutorial` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_lang_chapter14_tutorial-4ceee522866f3f15)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_lang_chapter14_tutorial-517e0e7f9cb3ff21)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests rust-lang-chapter14-tutorial
[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] [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" "4055c31e681d45d9f49f186c556a1efd5c50d8fe11ca84ab1c83048ea30ffad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4055c31e681d45d9f49f186c556a1efd5c50d8fe11ca84ab1c83048ea30ffad4", kill_on_drop: false }`
[INFO] [stdout] 4055c31e681d45d9f49f186c556a1efd5c50d8fe11ca84ab1c83048ea30ffad4