[INFO] fetching crate easy-sqlx-core 0.1.7...
[INFO] checking easy-sqlx-core-0.1.7 against try#6757d700f93f6d16c8b39cf79e96b019bd570e7d for pr-155299
[INFO] extracting crate easy-sqlx-core 0.1.7 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate easy-sqlx-core 0.1.7
[INFO] finished tweaking crates.io crate easy-sqlx-core 0.1.7
[INFO] tweaked toml for crates.io crate easy-sqlx-core 0.1.7 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate easy-sqlx-core 0.1.7 on toolchain 6757d700f93f6d16c8b39cf79e96b019bd570e7d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 294 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7516aa1a0fd139e42ea83af4e84d6af1440eb6803f4874324c069cb62f291c7
[INFO] running `Command { std: "docker" "start" "-a" "b7516aa1a0fd139e42ea83af4e84d6af1440eb6803f4874324c069cb62f291c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7516aa1a0fd139e42ea83af4e84d6af1440eb6803f4874324c069cb62f291c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7516aa1a0fd139e42ea83af4e84d6af1440eb6803f4874324c069cb62f291c7", kill_on_drop: false }`
[INFO] [stdout] b7516aa1a0fd139e42ea83af4e84d6af1440eb6803f4874324c069cb62f291c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] edbba346b817dfdc9aa76979a789f9df93c56ba5bb00a28a756e8d15ce3444bd
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[INFO] [stderr]     Checking sqlx v0.8.6
[INFO] [stderr]     Checking easy-sqlx-core v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/sql/dialects/context.rs:207:29
[INFO] [stdout]     |
[INFO] [stdout] 207 |                 if let Some(len) = new.typ.len {
[INFO] [stdout]     |                             ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:27:62
[INFO] [stdout]    |
[INFO] [stdout] 27 |     async fn check_upgrade_table<'c, E, DB: Database>(&self, conn: &mut E) -> io::Result<()>
[INFO] [stdout]    |                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:42:32
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn sql_create_table(&self, table: &TableSchema) -> std::io::Result<Vec<String>> {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn sql_drop_table(&self, table: &TableSchema) -> String {
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn sql_drop_index(&self, table: &TableSchema, index: &Index) -> String {
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:56:51
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn sql_drop_index(&self, table: &TableSchema, index: &Index) -> String {
[INFO] [stdout]    |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:60:32
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn sql_create_index(&self, table: &TableSchema, index: &Index) -> Option<String> {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:60:53
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn sql_create_index(&self, table: &TableSchema, index: &Index) -> Option<String> {
[INFO] [stdout]    |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:64:34
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn sql_create_indexes(&self, table: &TableSchema) -> Vec<String> {
[INFO] [stdout]    |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:68:49
[INFO] [stdout]    |
[INFO] [stdout] 68 |     async fn get_tables<C, DB: Database>(&self, conn: &mut C) -> std::io::Result<Vec<TableSchema>>
[INFO] [stdout]    |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:81:30
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn sql_add_column(&self, table: &TableSchema, col: &Column) -> String {
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `col`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:81:51
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn sql_add_column(&self, table: &TableSchema, col: &Column) -> String {
[INFO] [stdout]    |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_col`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |         table: &TableSchema,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `old`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |         old: &Column,
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_old`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         new: &Column,
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_new`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:99:31
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn sql_drop_column(&self, table: &TableSchema, col: &Column) -> String {
[INFO] [stdout]    |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `col`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:99:52
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn sql_drop_column(&self, table: &TableSchema, col: &Column) -> String {
[INFO] [stdout]    |                                                    ^^^ help: if this is intentional, prefix it with an underscore: `_col`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |         conn: &mut C,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table_name`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |         table_name: &String,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_table_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |         tag: &String,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/sql/dialects/context.rs:207:29
[INFO] [stdout]     |
[INFO] [stdout] 207 |                 if let Some(len) = new.typ.len {
[INFO] [stdout]     |                             ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table_name`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         table_name: &String,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_table_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         tag: &String,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag_value`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         tag_value: &String,
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tag_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:27:62
[INFO] [stdout]    |
[INFO] [stdout] 27 |     async fn check_upgrade_table<'c, E, DB: Database>(&self, conn: &mut E) -> io::Result<()>
[INFO] [stdout]    |                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:42:32
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn sql_create_table(&self, table: &TableSchema) -> std::io::Result<Vec<String>> {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn sql_drop_table(&self, table: &TableSchema) -> String {
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn sql_drop_index(&self, table: &TableSchema, index: &Index) -> String {
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:56:51
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn sql_drop_index(&self, table: &TableSchema, index: &Index) -> String {
[INFO] [stdout]    |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:60:32
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn sql_create_index(&self, table: &TableSchema, index: &Index) -> Option<String> {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:60:53
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn sql_create_index(&self, table: &TableSchema, index: &Index) -> Option<String> {
[INFO] [stdout]    |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:64:34
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn sql_create_indexes(&self, table: &TableSchema) -> Vec<String> {
[INFO] [stdout]    |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:68:49
[INFO] [stdout]    |
[INFO] [stdout] 68 |     async fn get_tables<C, DB: Database>(&self, conn: &mut C) -> std::io::Result<Vec<TableSchema>>
[INFO] [stdout]    |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:81:30
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn sql_add_column(&self, table: &TableSchema, col: &Column) -> String {
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `col`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:81:51
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn sql_add_column(&self, table: &TableSchema, col: &Column) -> String {
[INFO] [stdout]    |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_col`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |         table: &TableSchema,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `old`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |         old: &Column,
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_old`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         new: &Column,
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_new`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `return_sql`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |         return_sql: bool,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_return_sql`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:99:31
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn sql_drop_column(&self, table: &TableSchema, col: &Column) -> String {
[INFO] [stdout]    |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `return_sql`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:227:9
[INFO] [stdout]     |
[INFO] [stdout] 227 |         return_sql: bool,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_return_sql`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `col`
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:99:52
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn sql_drop_column(&self, table: &TableSchema, col: &Column) -> String {
[INFO] [stdout]    |                                                    ^^^ help: if this is intentional, prefix it with an underscore: `_col`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |         conn: &mut C,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table_name`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |         table_name: &String,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_table_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |         tag: &String,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table_name`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         table_name: &String,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_table_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         tag: &String,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag_value`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         tag_value: &String,
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tag_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `return_sql`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:275:66
[INFO] [stdout]     |
[INFO] [stdout] 275 |     fn sql_delete(&self, table: &TableSchema, wh: Option<Where>, return_sql: bool) -> String {
[INFO] [stdout]     |                                                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_return_sql`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `return_sql`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |         return_sql: bool,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_return_sql`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `return_sql`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:227:9
[INFO] [stdout]     |
[INFO] [stdout] 227 |         return_sql: bool,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_return_sql`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `return_sql`
[INFO] [stdout]    --> src/sql/dialects/schema/mysql/schema.rs:275:66
[INFO] [stdout]     |
[INFO] [stdout] 275 |     fn sql_delete(&self, table: &TableSchema, wh: Option<Where>, return_sql: bool) -> String {
[INFO] [stdout]     |                                                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_return_sql`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MySchema` is never constructed
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct MySchema {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `check_upgrade_table` are never used
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl MySchema {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 23 |     pub fn new(ctx: context::Context) -> impl Schema {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     async fn check_upgrade_table<'c, E, DB: Database>(&self, conn: &mut E) -> io::Result<()>
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `table_name`, `up_tag`, and `create_time` are never read
[INFO] [stdout]   --> src/sql/dialects/schema/postgres/upgrade.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Upgrade {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 41 |     pub id: i64,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 42 |     pub table_name: String,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 43 |     pub up_tag: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 44 |     pub up_value: String,
[INFO] [stdout] 45 |     pub create_time: String,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Upgrade` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MySchema` is never constructed
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct MySchema {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `check_upgrade_table` are never used
[INFO] [stdout]   --> src/sql/dialects/schema/mysql/schema.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl MySchema {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 23 |     pub fn new(ctx: context::Context) -> impl Schema {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     async fn check_upgrade_table<'c, E, DB: Database>(&self, conn: &mut E) -> io::Result<()>
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `table_name`, `up_tag`, and `create_time` are never read
[INFO] [stdout]   --> src/sql/dialects/schema/postgres/upgrade.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Upgrade {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 41 |     pub id: i64,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 42 |     pub table_name: String,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 43 |     pub up_tag: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 44 |     pub up_value: String,
[INFO] [stdout] 45 |     pub create_time: String,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Upgrade` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 39s
[INFO] running `Command { std: "docker" "inspect" "edbba346b817dfdc9aa76979a789f9df93c56ba5bb00a28a756e8d15ce3444bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edbba346b817dfdc9aa76979a789f9df93c56ba5bb00a28a756e8d15ce3444bd", kill_on_drop: false }`
[INFO] [stdout] edbba346b817dfdc9aa76979a789f9df93c56ba5bb00a28a756e8d15ce3444bd
