[INFO] fetching crate hands_on_data_structures_algorithms-practice 0.1.0...
[INFO] testing hands_on_data_structures_algorithms-practice-0.1.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate hands_on_data_structures_algorithms-practice 0.1.0 into /workspace/builds/worker-6-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-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hands_on_data_structures_algorithms-practice 0.1.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63aeb42fcc12bbc0435c5200780bc5ebbecda88624f2e1f507ff629c94d988ac
[INFO] running `Command { std: "docker" "start" "-a" "63aeb42fcc12bbc0435c5200780bc5ebbecda88624f2e1f507ff629c94d988ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63aeb42fcc12bbc0435c5200780bc5ebbecda88624f2e1f507ff629c94d988ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63aeb42fcc12bbc0435c5200780bc5ebbecda88624f2e1f507ff629c94d988ac", kill_on_drop: false }`
[INFO] [stdout] 63aeb42fcc12bbc0435c5200780bc5ebbecda88624f2e1f507ff629c94d988ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3481628ea2ff9a8dbb9acb70568fa9e2a43719c9ad48ac379f87949fb1a4931
[INFO] running `Command { std: "docker" "start" "-a" "d3481628ea2ff9a8dbb9acb70568fa9e2a43719c9ad48ac379f87949fb1a4931", kill_on_drop: false }`
[INFO] [stderr]    Compiling hands_on_data_structures_algorithms-practice v0.1.0 (/opt/rustwide/workdir)
[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)]` (part of `#[warn(unused)]`) 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] [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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `Command { std: "docker" "inspect" "d3481628ea2ff9a8dbb9acb70568fa9e2a43719c9ad48ac379f87949fb1a4931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3481628ea2ff9a8dbb9acb70568fa9e2a43719c9ad48ac379f87949fb1a4931", kill_on_drop: false }`
[INFO] [stdout] d3481628ea2ff9a8dbb9acb70568fa9e2a43719c9ad48ac379f87949fb1a4931
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] befde7017df283ded8146f780b7b870368d09b511b7f9b3bda21f5149d424f34
[INFO] running `Command { std: "docker" "start" "-a" "befde7017df283ded8146f780b7b870368d09b511b7f9b3bda21f5149d424f34", 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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 0.91s
[INFO] running `Command { std: "docker" "inspect" "befde7017df283ded8146f780b7b870368d09b511b7f9b3bda21f5149d424f34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "befde7017df283ded8146f780b7b870368d09b511b7f9b3bda21f5149d424f34", kill_on_drop: false }`
[INFO] [stdout] befde7017df283ded8146f780b7b870368d09b511b7f9b3bda21f5149d424f34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8c56c2a8bb0ea3193822cfe4fee7dad0255d1cceb6f7318f9652fa1406a80e7d
[INFO] running `Command { std: "docker" "start" "-a" "8c56c2a8bb0ea3193822cfe4fee7dad0255d1cceb6f7318f9652fa1406a80e7d", 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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-7397839728425639)
[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/main.rs (/opt/rustwide/target/debug/deps/hands_on_data_structures_algorithms_practice-d595a5e5ea0716b9)
[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/loop-ex.rs (/opt/rustwide/target/debug/deps/loop_ex-4146e97f277eb230)
[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/ownmemory-heap-box.rs (/opt/rustwide/target/debug/deps/ownmemory_heap_box-14d5a85f87ce9f9f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/bin/pointers-lifetime.rs (/opt/rustwide/target/debug/deps/pointers_lifetime-910f419d8f5b16de)
[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/results-option.rs (/opt/rustwide/target/debug/deps/results_option-8a026e598d80be03)
[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-5ad60187c4aefe28)
[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" "8c56c2a8bb0ea3193822cfe4fee7dad0255d1cceb6f7318f9652fa1406a80e7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c56c2a8bb0ea3193822cfe4fee7dad0255d1cceb6f7318f9652fa1406a80e7d", kill_on_drop: false }`
[INFO] [stdout] 8c56c2a8bb0ea3193822cfe4fee7dad0255d1cceb6f7318f9652fa1406a80e7d