[INFO] fetching crate hands_on_data_structures_algorithms-practice 0.1.0...
[INFO] testing hands_on_data_structures_algorithms-practice-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate hands_on_data_structures_algorithms-practice 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate hands_on_data_structures_algorithms-practice 0.1.0
[INFO] finished tweaking crates.io crate hands_on_data_structures_algorithms-practice 0.1.0
[INFO] tweaked toml for crates.io crate hands_on_data_structures_algorithms-practice 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hands_on_data_structures_algorithms-practice 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate hands_on_data_structures_algorithms-practice 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fe3f97c3855b2299f45cf51039a6bd38f197202e6c31a55c8a8ce1860b3a752
[INFO] running `Command { std: "docker" "start" "-a" "5fe3f97c3855b2299f45cf51039a6bd38f197202e6c31a55c8a8ce1860b3a752", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fe3f97c3855b2299f45cf51039a6bd38f197202e6c31a55c8a8ce1860b3a752", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fe3f97c3855b2299f45cf51039a6bd38f197202e6c31a55c8a8ce1860b3a752", kill_on_drop: false }`
[INFO] [stdout] 5fe3f97c3855b2299f45cf51039a6bd38f197202e6c31a55c8a8ce1860b3a752
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01c90265aa5ab79fdd4045ff6c99d2b111db33975bb7ae60b66d3578aecebef3
[INFO] running `Command { std: "docker" "start" "-a" "01c90265aa5ab79fdd4045ff6c99d2b111db33975bb7ae60b66d3578aecebef3", kill_on_drop: false }`
[INFO] [stderr]    Compiling hands_on_data_structures_algorithms-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `fave_color` is never read
[INFO] [stdout]  --> src/bin/sturct-enum.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Person {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     fave_color: Color,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]  --> src/bin/common-dstructure-mutability.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Person {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 3 |     name: String,
[INFO] [stdout] 4 |     age: i32,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Person` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `y` is never read
[INFO] [stdout]   --> src/bin/common-dstructure-mutability.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Point {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout]  9 |     x: i32,
[INFO] [stdout] 10 |     y: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "01c90265aa5ab79fdd4045ff6c99d2b111db33975bb7ae60b66d3578aecebef3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01c90265aa5ab79fdd4045ff6c99d2b111db33975bb7ae60b66d3578aecebef3", kill_on_drop: false }`
[INFO] [stdout] 01c90265aa5ab79fdd4045ff6c99d2b111db33975bb7ae60b66d3578aecebef3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f55b7c71786db921b9a7d2e5c21236abed5e5b99e882d55a05c9c272d88baede
[INFO] running `Command { std: "docker" "start" "-a" "f55b7c71786db921b9a7d2e5c21236abed5e5b99e882d55a05c9c272d88baede", kill_on_drop: false }`
[INFO] [stderr]    Compiling hands_on_data_structures_algorithms-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `fave_color` is never read
[INFO] [stdout]  --> src/bin/sturct-enum.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Person {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     fave_color: Color,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]  --> src/bin/common-dstructure-mutability.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Person {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 3 |     name: String,
[INFO] [stdout] 4 |     age: i32,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Person` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `y` is never read
[INFO] [stdout]   --> src/bin/common-dstructure-mutability.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Point {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout]  9 |     x: i32,
[INFO] [stdout] 10 |     y: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "f55b7c71786db921b9a7d2e5c21236abed5e5b99e882d55a05c9c272d88baede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f55b7c71786db921b9a7d2e5c21236abed5e5b99e882d55a05c9c272d88baede", kill_on_drop: false }`
[INFO] [stdout] f55b7c71786db921b9a7d2e5c21236abed5e5b99e882d55a05c9c272d88baede
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 337ae8b468ed2b7f7628aecd23416d98463246f2209e64b4490f40d469736b89
[INFO] running `Command { std: "docker" "start" "-a" "337ae8b468ed2b7f7628aecd23416d98463246f2209e64b4490f40d469736b89", kill_on_drop: false }`
[INFO] [stderr] warning: field `fave_color` is never read
[INFO] [stderr]  --> src/bin/sturct-enum.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub struct Person {
[INFO] [stderr]   |            ------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 6 |     fave_color: Color,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `hands_on_data_structures_algorithms-practice` (bin "sturct-enum" test) generated 1 warning
[INFO] [stderr] warning: field `age` is never read
[INFO] [stderr]  --> src/bin/common-dstructure-mutability.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub struct Person {
[INFO] [stderr]   |            ------ field in this struct
[INFO] [stderr] 3 |     name: String,
[INFO] [stderr] 4 |     age: i32,
[INFO] [stderr]   |     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Person` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `y` is never read
[INFO] [stderr]   --> src/bin/common-dstructure-mutability.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr]  8 | pub struct Point {
[INFO] [stderr]    |            ----- field in this struct
[INFO] [stderr]  9 |     x: i32,
[INFO] [stderr] 10 |     y: i32,
[INFO] [stderr]    |     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Point` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `hands_on_data_structures_algorithms-practice` (bin "common-dstructure-mutability" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/bin/common-dstructure-mutability.rs (/opt/rustwide/target/debug/deps/common_dstructure_mutability-1520f13f54e48c64)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/hands_on_data_structures_algorithms_practice-287b0cd82e5ba4a2)
[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] [stderr]      Running unittests src/bin/loop-ex.rs (/opt/rustwide/target/debug/deps/loop_ex-c5bdc39782f5139e)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ownmemory-heap-box.rs (/opt/rustwide/target/debug/deps/ownmemory_heap_box-4a87bbc04ec5e748)
[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] [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] [stderr]      Running unittests src/bin/pointers-lifetime.rs (/opt/rustwide/target/debug/deps/pointers_lifetime-5c9ebd044646acf0)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/results-option.rs (/opt/rustwide/target/debug/deps/results_option-2c6e70e5cd74e5b1)
[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] [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] [stderr]      Running unittests src/bin/sturct-enum.rs (/opt/rustwide/target/debug/deps/sturct_enum-1cff321df56ff93e)
[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" "337ae8b468ed2b7f7628aecd23416d98463246f2209e64b4490f40d469736b89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "337ae8b468ed2b7f7628aecd23416d98463246f2209e64b4490f40d469736b89", kill_on_drop: false }`
[INFO] [stdout] 337ae8b468ed2b7f7628aecd23416d98463246f2209e64b4490f40d469736b89