[INFO] cloning repository https://github.com/resqiar/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/resqiar/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fresqiar%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fresqiar%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 03dcd84b9a7e2307cf9043cb2f146bf6d52fe7db
[INFO] testing resqiar/learn-rust against 1.76.0 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fresqiar%2Flearn-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/resqiar/learn-rust on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/resqiar/learn-rust
[INFO] finished tweaking git repo https://github.com/resqiar/learn-rust
[INFO] tweaked toml for git repo https://github.com/resqiar/learn-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/resqiar/learn-rust 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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92c2bb57051cd32588bad5d35aacbc9964c90826849cfdc6fc5acbe320a5874e
[INFO] running `Command { std: "docker" "start" "-a" "92c2bb57051cd32588bad5d35aacbc9964c90826849cfdc6fc5acbe320a5874e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92c2bb57051cd32588bad5d35aacbc9964c90826849cfdc6fc5acbe320a5874e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92c2bb57051cd32588bad5d35aacbc9964c90826849cfdc6fc5acbe320a5874e", kill_on_drop: false }`
[INFO] [stdout] 92c2bb57051cd32588bad5d35aacbc9964c90826849cfdc6fc5acbe320a5874e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 963789ee063ed17638f438a489ce69ec6ce0f98e165af94713f00736d3b13663
[INFO] running `Command { std: "docker" "start" "-a" "963789ee063ed17638f438a489ce69ec6ce0f98e165af94713f00736d3b13663", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `kind` and `value` are never read
[INFO] [stdout]  --> src/enums_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Language {
[INFO] [stdout]   |        -------- fields in this struct
[INFO] [stdout] 3 |     kind: LanguageKind,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     value: Phrase,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Language` 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: fields `total_game` and `final_score` are never read
[INFO] [stdout]  --> src/generic_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Game<T, U> {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     total_game: T,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 4 |     final_score: U,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Game` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Electric` and `Petrol` are never constructed
[INFO] [stdout]  --> src/match_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum VType {
[INFO] [stdout]   |      ----- variants in this enum
[INFO] [stdout] 3 |     Electric,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     Diesel,
[INFO] [stdout] 5 |     Petrol,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `VType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]  --> src/struct_mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Vehicle {
[INFO] [stdout]   |        ------- fields in this struct
[INFO] [stdout] 6 |     id: usize,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Vehicle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_num` is never used
[INFO] [stdout]  --> src/test_mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sum_num(a: i32, b: i32) -> i32 {
[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 0.84s
[INFO] running `Command { std: "docker" "inspect" "963789ee063ed17638f438a489ce69ec6ce0f98e165af94713f00736d3b13663", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "963789ee063ed17638f438a489ce69ec6ce0f98e165af94713f00736d3b13663", kill_on_drop: false }`
[INFO] [stdout] 963789ee063ed17638f438a489ce69ec6ce0f98e165af94713f00736d3b13663
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 835e34c4ecef2ce8e28672fa049d12d518c71822b839142dd0abb953b7570566
[INFO] running `Command { std: "docker" "start" "-a" "835e34c4ecef2ce8e28672fa049d12d518c71822b839142dd0abb953b7570566", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `kind` and `value` are never read
[INFO] [stdout]  --> src/enums_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Language {
[INFO] [stdout]   |        -------- fields in this struct
[INFO] [stdout] 3 |     kind: LanguageKind,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     value: Phrase,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Language` 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: fields `total_game` and `final_score` are never read
[INFO] [stdout]  --> src/generic_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Game<T, U> {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     total_game: T,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 4 |     final_score: U,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Game` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Electric` and `Petrol` are never constructed
[INFO] [stdout]  --> src/match_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum VType {
[INFO] [stdout]   |      ----- variants in this enum
[INFO] [stdout] 3 |     Electric,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     Diesel,
[INFO] [stdout] 5 |     Petrol,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `VType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]  --> src/struct_mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Vehicle {
[INFO] [stdout]   |        ------- fields in this struct
[INFO] [stdout] 6 |     id: usize,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Vehicle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "835e34c4ecef2ce8e28672fa049d12d518c71822b839142dd0abb953b7570566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "835e34c4ecef2ce8e28672fa049d12d518c71822b839142dd0abb953b7570566", kill_on_drop: false }`
[INFO] [stdout] 835e34c4ecef2ce8e28672fa049d12d518c71822b839142dd0abb953b7570566
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8cfc36e7764d86139ee119811ebf7d60ba4f2d8bba7d64a166dfbbffb18f6ef7
[INFO] running `Command { std: "docker" "start" "-a" "8cfc36e7764d86139ee119811ebf7d60ba4f2d8bba7d64a166dfbbffb18f6ef7", kill_on_drop: false }`
[INFO] [stderr] warning: fields `kind` and `value` are never read
[INFO] [stderr]  --> src/enums_mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Language {
[INFO] [stderr]   |        -------- fields in this struct
[INFO] [stderr] 3 |     kind: LanguageKind,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 4 |     value: Phrase,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Language` 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: fields `total_game` and `final_score` are never read
[INFO] [stderr]  --> src/generic_mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Game<T, U> {
[INFO] [stderr]   |        ---- fields in this struct
[INFO] [stderr] 3 |     total_game: T,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 4 |     final_score: U,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Game` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Electric` and `Petrol` are never constructed
[INFO] [stderr]  --> src/match_mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum VType {
[INFO] [stderr]   |      ----- variants in this enum
[INFO] [stderr] 3 |     Electric,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 4 |     Diesel,
[INFO] [stderr] 5 |     Petrol,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `VType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `id` and `name` are never read
[INFO] [stderr]  --> src/struct_mod.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Vehicle {
[INFO] [stderr]   |        ------- fields in this struct
[INFO] [stderr] 6 |     id: usize,
[INFO] [stderr]   |     ^^
[INFO] [stderr] 7 |     name: String,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Vehicle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `learning_rust` (bin "learning_rust" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/learning_rust-30746c784182be60)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_mod::sum_test ... ok
[INFO] [stderr] error: test failed, to rerun pass `--bin learning_rust`
[INFO] [stdout] test test_mod::can_hold_test ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_mod::can_hold_test stdout ----
[INFO] [stdout] thread 'test_mod::can_hold_test' panicked at src/test_mod.rs:33:5:
[INFO] [stdout] Should hold the second Box
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55cc91972c86 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55cc91972c86 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55cc91972c86 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55cc91972c86 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55cc9199bad0 - core::fmt::rt::Argument::fmt::h76c38a80d925a410
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55cc9199bad0 - core::fmt::write::h3ed6aeaa977c8e45
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55cc919706ef - std::io::Write::write_fmt::h1299aa7741865f2b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x55cc91972a64 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55cc91972a64 - std::sys_common::backtrace::print::h85035a511aafe7a8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55cc919747d7 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25
[INFO] [stdout]   10:     0x55cc919744bd - std::panicking::default_hook::hf5fcb0f213fe709a
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55cc919446b7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h60265c2dfa87ee34
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x55cc919446b7 - test::test_main::{{closure}}::h77865bd3127078c6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55cc91974df6 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbc5ccf4eb663e1e5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x55cc91974df6 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x55cc91974b09 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:649:13
[INFO] [stdout]   16:     0x55cc91973186 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55cc919748a0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x55cc9190dcc5 - core::panicking::panic_fmt::h784f20a50eaab275
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55cc9190fd27 - learning_rust::test_mod::can_hold_test::h91582bb9c59cb976
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test_mod.rs:33:5
[INFO] [stdout]   20:     0x55cc9190fb57 - learning_rust::test_mod::can_hold_test::{{closure}}::h578d6d55355cf99b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test_mod.rs:16:19
[INFO] [stdout]   21:     0x55cc9190e926 - core::ops::function::FnOnce::call_once::hd4f1fa8041206db8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x55cc91949f8f - core::ops::function::FnOnce::call_once::h8dc6907944022cf6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x55cc91949f8f - test::__rust_begin_short_backtrace::haae1a87433f1efb3
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:627:18
[INFO] [stdout]   24:     0x55cc91948d11 - test::run_test_in_process::{{closure}}::h8c7decfa7c14e152
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:60
[INFO] [stdout]   25:     0x55cc91948d11 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h19e6ff056d9d21e9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   26:     0x55cc91948d11 - std::panicking::try::do_call::h89c848fcaa37c035
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   27:     0x55cc91948d11 - std::panicking::try::h57ab3dc74e2839b8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   28:     0x55cc91948d11 - std::panic::catch_unwind::hfb6a1b1abc120fb9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   29:     0x55cc91948d11 - test::run_test_in_process::h5ae2f9875edd562d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:27
[INFO] [stdout]   30:     0x55cc91948d11 - test::run_test::{{closure}}::h35d7300d8928a067
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:573:43
[INFO] [stdout]   31:     0x55cc91910046 - test::run_test::{{closure}}::h7525ced405d23d1b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:601:41
[INFO] [stdout]   32:     0x55cc91910046 - std::sys_common::backtrace::__rust_begin_short_backtrace::h4e7db78ce05afad8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   33:     0x55cc919150a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hcfbcb64f1a1b3482
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   34:     0x55cc919150a7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9d89c5c4108bd689
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   35:     0x55cc919150a7 - std::panicking::try::do_call::h8a4869bc94ec50c9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   36:     0x55cc919150a7 - std::panicking::try::h9a576f20ff81ac30
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   37:     0x55cc919150a7 - std::panic::catch_unwind::hbcb4e3f860ef9830
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   38:     0x55cc919150a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h93c79a6be1505948
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   39:     0x55cc919150a7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h426d96740c81bdaf
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x55cc919798a5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h12de4fc57affb195
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   41:     0x55cc919798a5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3c619f45059d5cf1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   42:     0x55cc919798a5 - std::sys::unix::thread::Thread::new::thread_start::hbac657605e4b7389
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   43:     0x7f8fbc0f1ac3 - <unknown>
[INFO] [stdout]   44:     0x7f8fbc182bf4 - __clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test_mod::can_hold_test
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8cfc36e7764d86139ee119811ebf7d60ba4f2d8bba7d64a166dfbbffb18f6ef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cfc36e7764d86139ee119811ebf7d60ba4f2d8bba7d64a166dfbbffb18f6ef7", kill_on_drop: false }`
[INFO] [stdout] 8cfc36e7764d86139ee119811ebf7d60ba4f2d8bba7d64a166dfbbffb18f6ef7
[INFO] testing resqiar/learn-rust against beta-2024-02-10 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fresqiar%2Flearn-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/resqiar/learn-rust on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/resqiar/learn-rust
[INFO] finished tweaking git repo https://github.com/resqiar/learn-rust
[INFO] tweaked toml for git repo https://github.com/resqiar/learn-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/resqiar/learn-rust 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" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a89dd32ae10a4900a076b2f66c95ec265568335547f6fa6d1cf28f17e36b7116
[INFO] running `Command { std: "docker" "start" "-a" "a89dd32ae10a4900a076b2f66c95ec265568335547f6fa6d1cf28f17e36b7116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a89dd32ae10a4900a076b2f66c95ec265568335547f6fa6d1cf28f17e36b7116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a89dd32ae10a4900a076b2f66c95ec265568335547f6fa6d1cf28f17e36b7116", kill_on_drop: false }`
[INFO] [stdout] a89dd32ae10a4900a076b2f66c95ec265568335547f6fa6d1cf28f17e36b7116
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] defee751d1343b7f0f760f3c2a1195414eb9da28e582706bef5f63d4684cb356
[INFO] running `Command { std: "docker" "start" "-a" "defee751d1343b7f0f760f3c2a1195414eb9da28e582706bef5f63d4684cb356", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `kind` and `value` are never read
[INFO] [stdout]  --> src/enums_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Language {
[INFO] [stdout]   |        -------- fields in this struct
[INFO] [stdout] 3 |     kind: LanguageKind,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     value: Phrase,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Language` 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 `0` is never read
[INFO] [stdout]   --> src/enums_mod.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 28 |     MorningSalute(String),
[INFO] [stdout]    |     ------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 28 |     MorningSalute(()),
[INFO] [stdout]    |                   ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/enums_mod.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |     NightSalute(String),
[INFO] [stdout]    |     ----------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 29 |     NightSalute(()),
[INFO] [stdout]    |                 ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `total_game` and `final_score` are never read
[INFO] [stdout]  --> src/generic_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Game<T, U> {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     total_game: T,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 4 |     final_score: U,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Game` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Electric` and `Petrol` are never constructed
[INFO] [stdout]  --> src/match_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum VType {
[INFO] [stdout]   |      ----- variants in this enum
[INFO] [stdout] 3 |     Electric,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     Diesel,
[INFO] [stdout] 5 |     Petrol,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `VType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]  --> src/struct_mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Vehicle {
[INFO] [stdout]   |        ------- fields in this struct
[INFO] [stdout] 6 |     id: usize,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Vehicle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_num` is never used
[INFO] [stdout]  --> src/test_mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sum_num(a: i32, b: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "defee751d1343b7f0f760f3c2a1195414eb9da28e582706bef5f63d4684cb356", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "defee751d1343b7f0f760f3c2a1195414eb9da28e582706bef5f63d4684cb356", kill_on_drop: false }`
[INFO] [stdout] defee751d1343b7f0f760f3c2a1195414eb9da28e582706bef5f63d4684cb356
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51b60093bcfac478c8e6fe7ebaa7f9da81496f2f7bf9140ca03e8102efcba093
[INFO] running `Command { std: "docker" "start" "-a" "51b60093bcfac478c8e6fe7ebaa7f9da81496f2f7bf9140ca03e8102efcba093", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `kind` and `value` are never read
[INFO] [stdout]  --> src/enums_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Language {
[INFO] [stdout]   |        -------- fields in this struct
[INFO] [stdout] 3 |     kind: LanguageKind,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     value: Phrase,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Language` 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 `0` is never read
[INFO] [stdout]   --> src/enums_mod.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 28 |     MorningSalute(String),
[INFO] [stdout]    |     ------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 28 |     MorningSalute(()),
[INFO] [stdout]    |                   ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/enums_mod.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |     NightSalute(String),
[INFO] [stdout]    |     ----------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 29 |     NightSalute(()),
[INFO] [stdout]    |                 ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `total_game` and `final_score` are never read
[INFO] [stdout]  --> src/generic_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Game<T, U> {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     total_game: T,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 4 |     final_score: U,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Game` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Electric` and `Petrol` are never constructed
[INFO] [stdout]  --> src/match_mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum VType {
[INFO] [stdout]   |      ----- variants in this enum
[INFO] [stdout] 3 |     Electric,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     Diesel,
[INFO] [stdout] 5 |     Petrol,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `VType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]  --> src/struct_mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Vehicle {
[INFO] [stdout]   |        ------- fields in this struct
[INFO] [stdout] 6 |     id: usize,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Vehicle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "51b60093bcfac478c8e6fe7ebaa7f9da81496f2f7bf9140ca03e8102efcba093", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51b60093bcfac478c8e6fe7ebaa7f9da81496f2f7bf9140ca03e8102efcba093", kill_on_drop: false }`
[INFO] [stdout] 51b60093bcfac478c8e6fe7ebaa7f9da81496f2f7bf9140ca03e8102efcba093
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f52c6db4544b3e2dafd6051b6ce6f54410bc3a7582e9a8e477b9832d4d3b8118
[INFO] running `Command { std: "docker" "start" "-a" "f52c6db4544b3e2dafd6051b6ce6f54410bc3a7582e9a8e477b9832d4d3b8118", kill_on_drop: false }`
[INFO] [stderr] warning: fields `kind` and `value` are never read
[INFO] [stderr]  --> src/enums_mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Language {
[INFO] [stderr]   |        -------- fields in this struct
[INFO] [stderr] 3 |     kind: LanguageKind,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 4 |     value: Phrase,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Language` 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: field `0` is never read
[INFO] [stderr]   --> src/enums_mod.rs:28:19
[INFO] [stderr]    |
[INFO] [stderr] 28 |     MorningSalute(String),
[INFO] [stderr]    |     ------------- ^^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[INFO] [stderr]    |
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 28 |     MorningSalute(()),
[INFO] [stderr]    |                   ~~
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/enums_mod.rs:29:17
[INFO] [stderr]    |
[INFO] [stderr] 29 |     NightSalute(String),
[INFO] [stderr]    |     ----------- ^^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[INFO] [stderr]    |
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 29 |     NightSalute(()),
[INFO] [stderr]    |                 ~~
[INFO] [stderr] 
[INFO] [stderr] warning: fields `total_game` and `final_score` are never read
[INFO] [stderr]  --> src/generic_mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Game<T, U> {
[INFO] [stderr]   |        ---- fields in this struct
[INFO] [stderr] 3 |     total_game: T,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 4 |     final_score: U,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Game` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Electric` and `Petrol` are never constructed
[INFO] [stderr]  --> src/match_mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum VType {
[INFO] [stderr]   |      ----- variants in this enum
[INFO] [stderr] 3 |     Electric,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 4 |     Diesel,
[INFO] [stderr] 5 |     Petrol,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `VType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `id` and `name` are never read
[INFO] [stderr]  --> src/struct_mod.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Vehicle {
[INFO] [stderr]   |        ------- fields in this struct
[INFO] [stderr] 6 |     id: usize,
[INFO] [stderr]   |     ^^
[INFO] [stderr] 7 |     name: String,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Vehicle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `learning_rust` (bin "learning_rust" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/learning_rust-136527c573ac6619)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_mod::sum_test ... ok
[INFO] [stdout] test test_mod::can_hold_test ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_mod::can_hold_test stdout ----
[INFO] [stdout] thread 'test_mod::can_hold_test' panicked at src/test_mod.rs:33:5:
[INFO] [stdout] Should hold the second Box
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55bb757215a6 - std::backtrace_rs::backtrace::libunwind::trace::h140b6deb6a45c671
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55bb757215a6 - std::backtrace_rs::backtrace::trace_unsynchronized::h8450d7e4e9219aed
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55bb757215a6 - std::sys_common::backtrace::_print_fmt::hbd28e5e6c6fc3a3f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55bb757215a6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb058f285768cf98e
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55bb7574a220 - core::fmt::rt::Argument::fmt::h87dec7a95127da24
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55bb7574a220 - core::fmt::write::h873f89a91a4832db
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55bb7571edff - std::io::Write::write_fmt::h90f651e9e694a4bb
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/io/mod.rs:1846:15
[INFO] [stdout]    7:     0x55bb75721384 - std::sys_common::backtrace::_print::h7719d1529d9a9e13
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55bb75721384 - std::sys_common::backtrace::print::haa3afbd0e7947108
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55bb757230f7 - std::panicking::default_hook::{{closure}}::h10e3de2ec0eaff22
[INFO] [stdout]   10:     0x55bb75722ddd - std::panicking::default_hook::hbdc1b1b7fe073dab
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55bb756f2cc7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h20f7887d7cd0a330
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x55bb756f2cc7 - test::test_main::{{closure}}::hc125a615957b5cb1
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55bb75723716 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h8c19e0590f8443c4
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x55bb75723716 - std::panicking::rust_panic_with_hook::hb81692602460473d
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:785:13
[INFO] [stdout]   15:     0x55bb75723429 - std::panicking::begin_panic_handler::{{closure}}::h2470593aa2678e9c
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:651:13
[INFO] [stdout]   16:     0x55bb75721aa6 - std::sys_common::backtrace::__rust_end_short_backtrace::h560bb50225b0562b
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55bb757231b4 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:647:5
[INFO] [stdout]   18:     0x55bb756bc765 - core::panicking::panic_fmt::h29b6f262f6458dc3
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55bb756be827 - learning_rust::test_mod::can_hold_test::h04973b440d662a1e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test_mod.rs:33:5
[INFO] [stdout]   20:     0x55bb756be657 - learning_rust::test_mod::can_hold_test::{{closure}}::h213d3bc3eda33533
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test_mod.rs:16:19
[INFO] [stdout]   21:     0x55bb756bd3e6 - core::ops::function::FnOnce::call_once::hdf82b1e72d15cdd2
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x55bb756f88bf - core::ops::function::FnOnce::call_once::h692fe6f34484199f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x55bb756f88bf - test::__rust_begin_short_backtrace::h48b62e76bd60e2de
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:621:18
[INFO] [stdout]   24:     0x55bb756f76e1 - test::run_test_in_process::{{closure}}::h1c68597526ef43db
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:644:60
[INFO] [stdout]   25:     0x55bb756f76e1 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hcae98092997f976b
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   26:     0x55bb756f76e1 - std::panicking::try::do_call::h8d1548c2f5bb535a
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:554:40
[INFO] [stdout]   27:     0x55bb756f76e1 - std::panicking::try::hbb7a2054f484688e
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:518:19
[INFO] [stdout]   28:     0x55bb756f76e1 - std::panic::catch_unwind::h696d12d9d80497c2
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panic.rs:142:14
[INFO] [stdout]   29:     0x55bb756f76e1 - test::run_test_in_process::h053367a7217c825b
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:644:27
[INFO] [stdout]   30:     0x55bb756f76e1 - test::run_test::{{closure}}::hfa524e9fabcba78e
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:567:43
[INFO] [stdout]   31:     0x55bb756beb46 - test::run_test::{{closure}}::h2c4d0bb741ef7f9f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:595:41
[INFO] [stdout]   32:     0x55bb756beb46 - std::sys_common::backtrace::__rust_begin_short_backtrace::h0d2c708415550075
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   33:     0x55bb756c3b07 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h76e2635840d7293f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   34:     0x55bb756c3b07 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::haa640b67a810a214
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   35:     0x55bb756c3b07 - std::panicking::try::do_call::h41892e3bc2807ab5
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:554:40
[INFO] [stdout]   36:     0x55bb756c3b07 - std::panicking::try::h861a16d180681c80
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:518:19
[INFO] [stdout]   37:     0x55bb756c3b07 - std::panic::catch_unwind::h8195f9064b1509fa
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panic.rs:142:14
[INFO] [stdout]   38:     0x55bb756c3b07 - std::thread::Builder::spawn_unchecked_::{{closure}}::h73cc419da1217371
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   39:     0x55bb756c3b07 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h79dc6499ff073b09
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x55bb75727ab5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha718e8cdc51a5182
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   41:     0x55bb75727ab5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h86072abc877c5474
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   42:     0x55bb75727ab5 - std::sys::pal::unix::thread::Thread::new::thread_start::hac4056197c365894
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   43:     0x7f65c80ebac3 - <unknown>
[INFO] [stdout]   44:     0x7f65c817cbf4 - __clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test_mod::can_hold_test
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin learning_rust`
[INFO] running `Command { std: "docker" "inspect" "f52c6db4544b3e2dafd6051b6ce6f54410bc3a7582e9a8e477b9832d4d3b8118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f52c6db4544b3e2dafd6051b6ce6f54410bc3a7582e9a8e477b9832d4d3b8118", kill_on_drop: false }`
[INFO] [stdout] f52c6db4544b3e2dafd6051b6ce6f54410bc3a7582e9a8e477b9832d4d3b8118
