[INFO] cloning repository https://github.com/AndreyElagin/maybe-db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AndreyElagin/maybe-db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreyElagin%2Fmaybe-db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreyElagin%2Fmaybe-db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c990cbbbee1cbad68cd31ceefbe7ecba723c07b2
[INFO] testing AndreyElagin/maybe-db against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreyElagin%2Fmaybe-db" "/workspace/builds/worker-43/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-43/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AndreyElagin/maybe-db on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AndreyElagin/maybe-db
[INFO] finished tweaking git repo https://github.com/AndreyElagin/maybe-db
[INFO] tweaked toml for git repo https://github.com/AndreyElagin/maybe-db written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] crate git repo https://github.com/AndreyElagin/maybe-db already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b68a72c002805cf7c305d97db6f4b731dcfa5bb03ef18eea4d93c7a56d7d258
[INFO] running `Command { std: "docker" "start" "-a" "7b68a72c002805cf7c305d97db6f4b731dcfa5bb03ef18eea4d93c7a56d7d258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b68a72c002805cf7c305d97db6f4b731dcfa5bb03ef18eea4d93c7a56d7d258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b68a72c002805cf7c305d97db6f4b731dcfa5bb03ef18eea4d93c7a56d7d258", kill_on_drop: false }`
[INFO] [stdout] 7b68a72c002805cf7c305d97db6f4b731dcfa5bb03ef18eea4d93c7a56d7d258
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d781aefb808beb28655f37cb0001072879476e9320bdecf64e380a876278be5
[INFO] running `Command { std: "docker" "start" "-a" "4d781aefb808beb28655f37cb0001072879476e9320bdecf64e380a876278be5", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe-db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 99  |                 todo!("doesn't work");
[INFO] [stdout]     |                 --------------------- any code following this expression is unreachable
[INFO] [stdout] 100 |                 uname.push(self.username[i])
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:107:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |                 todo!("doesn't work");
[INFO] [stdout]     |                 --------------------- any code following this expression is unreachable
[INFO] [stdout] 107 |                 email.push(self.email[i])
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut uname = String::from("");
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut email = String::from("");
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ID_SIZE`
[INFO] [stdout]   --> src/main.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | const ID_SIZE: u32 = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ID_OFFSET`
[INFO] [stdout]   --> src/main.rs:55:1
[INFO] [stdout]    |
[INFO] [stdout] 55 | const ID_OFFSET: u32 = 0;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `USERNAME_OFFSET`
[INFO] [stdout]   --> src/main.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | const USERNAME_OFFSET: u32 = ID_OFFSET + ID_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EMAIL_OFFSET`
[INFO] [stdout]   --> src/main.rs:57:1
[INFO] [stdout]    |
[INFO] [stdout] 57 | const EMAIL_OFFSET: u32 = USERNAME_OFFSET + USERNAME_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ROW_SIZE`
[INFO] [stdout]   --> src/main.rs:58:1
[INFO] [stdout]    |
[INFO] [stdout] 58 | const ROW_SIZE: u32 = ID_SIZE + USERNAME_SIZE + EMAIL_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAGE_SIZE`
[INFO] [stdout]   --> src/main.rs:60:1
[INFO] [stdout]    |
[INFO] [stdout] 60 | const PAGE_SIZE: u32 = 4096;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `TABLE_MAX_PAGES`
[INFO] [stdout]   --> src/main.rs:61:1
[INFO] [stdout]    |
[INFO] [stdout] 61 | const TABLE_MAX_PAGES: u32 = 100;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ROWS_PER_PAGE`
[INFO] [stdout]   --> src/main.rs:62:1
[INFO] [stdout]    |
[INFO] [stdout] 62 | const ROWS_PER_PAGE: u32 = PAGE_SIZE / ROW_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `TABLE_MAX_ROWS`
[INFO] [stdout]   --> src/main.rs:63:1
[INFO] [stdout]    |
[INFO] [stdout] 63 | const TABLE_MAX_ROWS: u32 = ROWS_PER_PAGE * TABLE_MAX_PAGES;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Success`
[INFO] [stdout]   --> src/main.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     Success,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SyntaxError`
[INFO] [stdout]   --> src/main.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     SyntaxError,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `Command { std: "docker" "inspect" "4d781aefb808beb28655f37cb0001072879476e9320bdecf64e380a876278be5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d781aefb808beb28655f37cb0001072879476e9320bdecf64e380a876278be5", kill_on_drop: false }`
[INFO] [stdout] 4d781aefb808beb28655f37cb0001072879476e9320bdecf64e380a876278be5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 874f8f9e275ebbddc5521556d6e0603aaa3e0958d83c5fd66f66bbc0fa245716
[INFO] running `Command { std: "docker" "start" "-a" "874f8f9e275ebbddc5521556d6e0603aaa3e0958d83c5fd66f66bbc0fa245716", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe-db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 99  |                 todo!("doesn't work");
[INFO] [stdout]     |                 --------------------- any code following this expression is unreachable
[INFO] [stdout] 100 |                 uname.push(self.username[i])
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:107:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |                 todo!("doesn't work");
[INFO] [stdout]     |                 --------------------- any code following this expression is unreachable
[INFO] [stdout] 107 |                 email.push(self.email[i])
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut uname = String::from("");
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut email = String::from("");
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ID_SIZE`
[INFO] [stdout]   --> src/main.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | const ID_SIZE: u32 = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ID_OFFSET`
[INFO] [stdout]   --> src/main.rs:55:1
[INFO] [stdout]    |
[INFO] [stdout] 55 | const ID_OFFSET: u32 = 0;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `USERNAME_OFFSET`
[INFO] [stdout]   --> src/main.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | const USERNAME_OFFSET: u32 = ID_OFFSET + ID_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EMAIL_OFFSET`
[INFO] [stdout]   --> src/main.rs:57:1
[INFO] [stdout]    |
[INFO] [stdout] 57 | const EMAIL_OFFSET: u32 = USERNAME_OFFSET + USERNAME_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ROW_SIZE`
[INFO] [stdout]   --> src/main.rs:58:1
[INFO] [stdout]    |
[INFO] [stdout] 58 | const ROW_SIZE: u32 = ID_SIZE + USERNAME_SIZE + EMAIL_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAGE_SIZE`
[INFO] [stdout]   --> src/main.rs:60:1
[INFO] [stdout]    |
[INFO] [stdout] 60 | const PAGE_SIZE: u32 = 4096;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `TABLE_MAX_PAGES`
[INFO] [stdout]   --> src/main.rs:61:1
[INFO] [stdout]    |
[INFO] [stdout] 61 | const TABLE_MAX_PAGES: u32 = 100;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ROWS_PER_PAGE`
[INFO] [stdout]   --> src/main.rs:62:1
[INFO] [stdout]    |
[INFO] [stdout] 62 | const ROWS_PER_PAGE: u32 = PAGE_SIZE / ROW_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `TABLE_MAX_ROWS`
[INFO] [stdout]   --> src/main.rs:63:1
[INFO] [stdout]    |
[INFO] [stdout] 63 | const TABLE_MAX_ROWS: u32 = ROWS_PER_PAGE * TABLE_MAX_PAGES;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Success`
[INFO] [stdout]   --> src/main.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     Success,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SyntaxError`
[INFO] [stdout]   --> src/main.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     SyntaxError,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.09s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/maybe_db-59683f1126d0db68)
[INFO] running `Command { std: "docker" "inspect" "874f8f9e275ebbddc5521556d6e0603aaa3e0958d83c5fd66f66bbc0fa245716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "874f8f9e275ebbddc5521556d6e0603aaa3e0958d83c5fd66f66bbc0fa245716", kill_on_drop: false }`
[INFO] [stdout] 874f8f9e275ebbddc5521556d6e0603aaa3e0958d83c5fd66f66bbc0fa245716
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6f50bf654dbf485ee7581312e5bc5e59bec0a8b0d60d55a812d0d0fe3aa472bd
[INFO] running `Command { std: "docker" "start" "-a" "6f50bf654dbf485ee7581312e5bc5e59bec0a8b0d60d55a812d0d0fe3aa472bd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unreachable expression
[INFO] [stdout] 
[INFO] [stderr]    --> src/main.rs:100:17
[INFO] [stdout] running 0 tests
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 99  |                 todo!("doesn't work");
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     |                 --------------------- any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stderr] 100 |                 uname.push(self.username[i])
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/main.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 106 |                 todo!("doesn't work");
[INFO] [stderr]     |                 --------------------- any code following this expression is unreachable
[INFO] [stderr] 107 |                 email.push(self.email[i])
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |         let mut uname = String::from("");
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 |         let mut email = String::from("");
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ID_SIZE`
[INFO] [stderr]   --> src/main.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | const ID_SIZE: u32 = 4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ID_OFFSET`
[INFO] [stderr]   --> src/main.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | const ID_OFFSET: u32 = 0;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `USERNAME_OFFSET`
[INFO] [stderr]   --> src/main.rs:56:1
[INFO] [stderr]    |
[INFO] [stderr] 56 | const USERNAME_OFFSET: u32 = ID_OFFSET + ID_SIZE;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `EMAIL_OFFSET`
[INFO] [stderr]   --> src/main.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | const EMAIL_OFFSET: u32 = USERNAME_OFFSET + USERNAME_SIZE;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ROW_SIZE`
[INFO] [stderr]   --> src/main.rs:58:1
[INFO] [stderr]    |
[INFO] [stderr] 58 | const ROW_SIZE: u32 = ID_SIZE + USERNAME_SIZE + EMAIL_SIZE;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `PAGE_SIZE`
[INFO] [stderr]   --> src/main.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | const PAGE_SIZE: u32 = 4096;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `TABLE_MAX_PAGES`
[INFO] [stderr]   --> src/main.rs:61:1
[INFO] [stderr]    |
[INFO] [stderr] 61 | const TABLE_MAX_PAGES: u32 = 100;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ROWS_PER_PAGE`
[INFO] [stderr]   --> src/main.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | const ROWS_PER_PAGE: u32 = PAGE_SIZE / ROW_SIZE;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `TABLE_MAX_ROWS`
[INFO] [stderr]   --> src/main.rs:63:1
[INFO] [stderr]    |
[INFO] [stderr] 63 | const TABLE_MAX_ROWS: u32 = ROWS_PER_PAGE * TABLE_MAX_PAGES;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Success`
[INFO] [stderr]   --> src/main.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     Success,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SyntaxError`
[INFO] [stderr]   --> src/main.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     SyntaxError,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `maybe-db` (bin "maybe-db" test) generated 15 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.24s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/maybe_db-59683f1126d0db68)
[INFO] running `Command { std: "docker" "inspect" "6f50bf654dbf485ee7581312e5bc5e59bec0a8b0d60d55a812d0d0fe3aa472bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f50bf654dbf485ee7581312e5bc5e59bec0a8b0d60d55a812d0d0fe3aa472bd", kill_on_drop: false }`
[INFO] [stdout] 6f50bf654dbf485ee7581312e5bc5e59bec0a8b0d60d55a812d0d0fe3aa472bd