[INFO] fetching crate migrant_lib 0.34.0...
[INFO] checking migrant_lib-0.34.0 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate migrant_lib 0.34.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate migrant_lib 0.34.0 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate migrant_lib 0.34.0
[INFO] finished tweaking crates.io crate migrant_lib 0.34.0
[INFO] tweaked toml for crates.io crate migrant_lib 0.34.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate migrant_lib 0.34.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ahash v0.8.3
[INFO] [stderr]   Downloaded postgres-native-tls v0.5.0
[INFO] [stderr]   Downloaded frunk_proc_macros_impl v0.1.0
[INFO] [stderr]   Downloaded twox-hash v1.6.2
[INFO] [stderr]   Downloaded crossbeam-queue v0.3.3
[INFO] [stderr]   Downloaded frunk_derives v0.4.0
[INFO] [stderr]   Downloaded postgres v0.19.2
[INFO] [stderr]   Downloaded lru v0.7.2
[INFO] [stderr]   Downloaded wyz v0.4.0
[INFO] [stderr]   Downloaded subprocess v0.2.8
[INFO] [stderr]   Downloaded lexical-util v0.8.1
[INFO] [stderr]   Downloaded lexical-write-float v0.8.2
[INFO] [stderr]   Downloaded rusqlite v0.29.0
[INFO] [stderr]   Downloaded rust_decimal v1.19.0
[INFO] [stderr]   Downloaded mysql_common v0.28.0
[INFO] [stderr]   Downloaded mysql v22.0.0
[INFO] [stderr]   Downloaded lexical-write-integer v0.8.0
[INFO] [stderr]   Downloaded bindgen v0.58.1
[INFO] [stderr]   Downloaded bitvec v0.22.3
[INFO] [stderr]   Downloaded lexical-parse-float v0.8.2
[INFO] [stderr]   Downloaded time v0.3.5
[INFO] [stderr]   Downloaded postgres-protocol v0.6.3
[INFO] [stderr]   Downloaded tokio-util v0.6.9
[INFO] [stderr]   Downloaded tokio-postgres v0.7.5
[INFO] [stderr]   Downloaded lexical v6.0.1
[INFO] [stderr]   Downloaded md-5 v0.10.0
[INFO] [stderr]   Downloaded bigdecimal v0.3.0
[INFO] [stderr]   Downloaded cmake v0.1.48
[INFO] [stderr]   Downloaded frunk_core v0.4.0
[INFO] [stderr]   Downloaded frunk v0.4.0
[INFO] [stderr]   Downloaded lexical-core v0.8.2
[INFO] [stderr]   Downloaded fastrand v1.6.0
[INFO] [stderr]   Downloaded tokio v1.15.0
[INFO] [stderr]   Downloaded siphasher v0.3.7
[INFO] [stderr]   Downloaded frunk_proc_macro_helpers v0.1.0
[INFO] [stderr]   Downloaded frunk_proc_macros v0.1.0
[INFO] [stderr]   Downloaded lexical-parse-integer v0.8.0
[INFO] [stderr]   Downloaded postgres-types v0.2.2
[INFO] [stderr]   Downloaded io-enum v1.0.1
[INFO] [stderr]   Downloaded funty v1.2.0
[INFO] [stderr]   Downloaded sha2 v0.10.1
[INFO] [stderr]   Downloaded libz-sys v1.1.3
[INFO] [stderr]   Downloaded libsqlite3-sys v0.26.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ca671a326b0b64d22fe5e5761ea4e230d72748d63e1673d60e0ab891423a0a1
[INFO] running `Command { std: "docker" "start" "-a" "3ca671a326b0b64d22fe5e5761ea4e230d72748d63e1673d60e0ab891423a0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ca671a326b0b64d22fe5e5761ea4e230d72748d63e1673d60e0ab891423a0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ca671a326b0b64d22fe5e5761ea4e230d72748d63e1673d60e0ab891423a0a1", kill_on_drop: false }`
[INFO] [stdout] 3ca671a326b0b64d22fe5e5761ea4e230d72748d63e1673d60e0ab891423a0a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef681fd884336b1025da6c324b8f65ee21ed1a94857e61fdf553cf9e90f04b77
[INFO] running `Command { std: "docker" "start" "-a" "ef681fd884336b1025da6c324b8f65ee21ed1a94857e61fdf553cf9e90f04b77", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling serde_json v1.0.74
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking migrant_lib v0.34.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/mysql.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/pg.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/drivers/sqlite.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/sqlite.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/mysql.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/pg.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/drivers/sqlite.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/sqlite.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:14:24
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn can_connect(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:17:35
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn migration_table_exists(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn migration_setup(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:23:30
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn select_migrations(conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:26:33
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn insert_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/mysql.rs:26:49
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn insert_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn remove_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/mysql.rs:29:49
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn remove_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_migration(conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/mysql.rs:32:42
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_migration(conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:35:30
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn run_migration_str(conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/mysql.rs:35:46
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn run_migration_str(conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:13:24
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn can_connect(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:13:45
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn can_connect(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn migration_table_exists(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:16:56
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn migration_table_exists(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn migration_setup(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:19:49
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn migration_setup(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn select_migrations(cert: Option<&Path>, conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:22:51
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn select_migrations(cert: Option<&Path>, conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:25:54
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/pg.rs:25:70
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:28:54
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/pg.rs:28:70
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:31:47
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/pg.rs:31:63
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:34:30
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:34:51
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/pg.rs:34:67
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:12:35
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn create_file_if_missing(path: &Path) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:15:35
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn migration_table_exists(db_path: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn migration_setup(db_path: &Path) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:21:30
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn select_migrations(db_path: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn insert_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/sqlite.rs:24:48
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn insert_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn remove_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/sqlite.rs:27:48
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn remove_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:30:26
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn run_migration(db_path: &Path, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/sqlite.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn run_migration(db_path: &Path, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:33:30
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn run_migration_str(db_path: &Path, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/sqlite.rs:33:46
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn run_migration_str(db_path: &Path, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:14:24
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn can_connect(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:17:35
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn migration_table_exists(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn migration_setup(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:23:30
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn select_migrations(conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:26:33
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn insert_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/mysql.rs:26:49
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn insert_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn remove_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/mysql.rs:29:49
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn remove_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_migration(conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/mysql.rs:32:42
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_migration(conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:35:30
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn run_migration_str(conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/mysql.rs:35:46
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn run_migration_str(conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:13:24
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn can_connect(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:13:45
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn can_connect(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn migration_table_exists(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:16:56
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn migration_table_exists(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn migration_setup(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:19:49
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn migration_setup(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn select_migrations(cert: Option<&Path>, conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:22:51
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn select_migrations(cert: Option<&Path>, conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:25:54
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/pg.rs:25:70
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:28:54
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/pg.rs:28:70
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:31:47
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/pg.rs:31:63
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:34:30
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:34:51
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/pg.rs:34:67
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:12:35
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn create_file_if_missing(path: &Path) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:15:35
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn migration_table_exists(db_path: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn migration_setup(db_path: &Path) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:21:30
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn select_migrations(db_path: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn insert_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/sqlite.rs:24:48
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn insert_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn remove_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/sqlite.rs:27:48
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn remove_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:30:26
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn run_migration(db_path: &Path, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/sqlite.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn run_migration(db_path: &Path, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:33:30
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn run_migration_str(db_path: &Path, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/sqlite.rs:33:46
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn run_migration_str(db_path: &Path, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `CREATE_TABLE` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub static CREATE_TABLE: &str = "create table __migrant_migrations(tag text unique);";
[INFO] [stdout]   |                ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MYSQL_CREATE_TABLE` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub static MYSQL_CREATE_TABLE: &str =
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `GET_MIGRATIONS` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub static GET_MIGRATIONS: &str = "select tag from __migrant_migrations;";
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `SQLITE_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub static SQLITE_MIGRATION_TABLE_EXISTS: &str = "select exists(select 1 from sqlite_master where type = 'table' and name = '__migran...
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `PG_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub static PG_MIGRATION_TABLE_EXISTS: &str =
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MYSQL_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub static MYSQL_MIGRATION_TABLE_EXISTS: &str = "select exists(select 1 from information_schema.tables where table_name='__migrant_mi...
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `CREATE_TABLE` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub static CREATE_TABLE: &str = "create table __migrant_migrations(tag text unique);";
[INFO] [stdout]   |                ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MYSQL_CREATE_TABLE` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub static MYSQL_CREATE_TABLE: &str =
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `GET_MIGRATIONS` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub static GET_MIGRATIONS: &str = "select tag from __migrant_migrations;";
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `SQLITE_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub static SQLITE_MIGRATION_TABLE_EXISTS: &str = "select exists(select 1 from sqlite_master where type = 'table' and name = '__migran...
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `PG_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub static PG_MIGRATION_TABLE_EXISTS: &str =
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MYSQL_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub static MYSQL_MIGRATION_TABLE_EXISTS: &str = "select exists(select 1 from information_schema.tables where table_name='__migrant_mi...
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.09s
[INFO] running `Command { std: "docker" "inspect" "ef681fd884336b1025da6c324b8f65ee21ed1a94857e61fdf553cf9e90f04b77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef681fd884336b1025da6c324b8f65ee21ed1a94857e61fdf553cf9e90f04b77", kill_on_drop: false }`
[INFO] [stdout] ef681fd884336b1025da6c324b8f65ee21ed1a94857e61fdf553cf9e90f04b77
[INFO] checking migrant_lib-0.34.0 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate migrant_lib 0.34.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate migrant_lib 0.34.0 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate migrant_lib 0.34.0
[INFO] finished tweaking crates.io crate migrant_lib 0.34.0
[INFO] tweaked toml for crates.io crate migrant_lib 0.34.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate migrant_lib 0.34.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f14ea77e35721e5dbd297bba637e688130faecb2e4a4454f2e6d290c93e0bb83
[INFO] running `Command { std: "docker" "start" "-a" "f14ea77e35721e5dbd297bba637e688130faecb2e4a4454f2e6d290c93e0bb83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f14ea77e35721e5dbd297bba637e688130faecb2e4a4454f2e6d290c93e0bb83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f14ea77e35721e5dbd297bba637e688130faecb2e4a4454f2e6d290c93e0bb83", kill_on_drop: false }`
[INFO] [stdout] f14ea77e35721e5dbd297bba637e688130faecb2e4a4454f2e6d290c93e0bb83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c92573b502c544b2258862d2ec114a782d379cb88e541604bd68b5f0d6e5f55c
[INFO] running `Command { std: "docker" "start" "-a" "c92573b502c544b2258862d2ec114a782d379cb88e541604bd68b5f0d6e5f55c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling serde_json v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking migrant_lib v0.34.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/mysql.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/pg.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/drivers/sqlite.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/sqlite.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/mysql.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/pg.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/drivers/sqlite.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/drivers/sqlite.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:14:24
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn can_connect(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:17:35
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn migration_table_exists(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn migration_setup(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:23:30
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn select_migrations(conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:26:33
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn insert_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/mysql.rs:26:49
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn insert_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn remove_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/mysql.rs:29:49
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn remove_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_migration(conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/mysql.rs:32:42
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_migration(conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:35:30
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn run_migration_str(conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/mysql.rs:35:46
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn run_migration_str(conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:13:24
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn can_connect(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:13:45
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn can_connect(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn migration_table_exists(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:16:56
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn migration_table_exists(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn migration_setup(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:19:49
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn migration_setup(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn select_migrations(cert: Option<&Path>, conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:22:51
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn select_migrations(cert: Option<&Path>, conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:25:54
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/pg.rs:25:70
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:28:54
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/pg.rs:28:70
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:31:47
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/pg.rs:31:63
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:34:30
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:34:51
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/pg.rs:34:67
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:12:35
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn create_file_if_missing(path: &Path) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:15:35
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn migration_table_exists(db_path: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn migration_setup(db_path: &Path) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:21:30
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn select_migrations(db_path: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn insert_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/sqlite.rs:24:48
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn insert_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn remove_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/sqlite.rs:27:48
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn remove_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:30:26
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn run_migration(db_path: &Path, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/sqlite.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn run_migration(db_path: &Path, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:33:30
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn run_migration_str(db_path: &Path, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/sqlite.rs:33:46
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn run_migration_str(db_path: &Path, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:14:24
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn can_connect(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:17:35
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn migration_table_exists(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn migration_setup(conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:23:30
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn select_migrations(conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:26:33
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn insert_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/mysql.rs:26:49
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn insert_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn remove_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/mysql.rs:29:49
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn remove_migration_tag(conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_migration(conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/mysql.rs:32:42
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_migration(conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/mysql.rs:35:30
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn run_migration_str(conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/mysql.rs:35:46
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn run_migration_str(conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:13:24
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn can_connect(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:13:45
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn can_connect(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn migration_table_exists(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:16:56
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn migration_table_exists(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn migration_setup(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:19:49
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn migration_setup(cert: Option<&Path>, conn_str: &str) -> Result<bool> {
[INFO] [stdout]    |                                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn select_migrations(cert: Option<&Path>, conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:22:51
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn select_migrations(cert: Option<&Path>, conn_str: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:25:54
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/pg.rs:25:70
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:28:54
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/pg.rs:28:70
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn remove_migration_tag(cert: Option<&Path>, conn_str: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:31:47
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/pg.rs:31:63
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn run_migration(cert: Option<&Path>, conn_str: &str, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cert`
[INFO] [stdout]   --> src/drivers/pg.rs:34:30
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_cert`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_str`
[INFO] [stdout]   --> src/drivers/pg.rs:34:51
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/pg.rs:34:67
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn run_migration_str(cert: Option<&Path>, conn_str: &str, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:12:35
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn create_file_if_missing(path: &Path) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:15:35
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn migration_table_exists(db_path: &str) -> Result<bool> {
[INFO] [stdout]    |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn migration_setup(db_path: &Path) -> Result<bool> {
[INFO] [stdout]    |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:21:30
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn select_migrations(db_path: &str) -> Result<Vec<String>> {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn insert_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/sqlite.rs:24:48
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn insert_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn remove_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/drivers/sqlite.rs:27:48
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn remove_migration_tag(db_path: &str, tag: &str) -> Result<()> {
[INFO] [stdout]    |                                                ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:30:26
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn run_migration(db_path: &Path, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]   --> src/drivers/sqlite.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn run_migration(db_path: &Path, filename: &Path) -> Result<()> {
[INFO] [stdout]    |                                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db_path`
[INFO] [stdout]   --> src/drivers/sqlite.rs:33:30
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn run_migration_str(db_path: &Path, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/drivers/sqlite.rs:33:46
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn run_migration_str(db_path: &Path, stmt: &str) -> Result<()> {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `CREATE_TABLE` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub static CREATE_TABLE: &str = "create table __migrant_migrations(tag text unique);";
[INFO] [stdout]   |                ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MYSQL_CREATE_TABLE` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub static MYSQL_CREATE_TABLE: &str =
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `GET_MIGRATIONS` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub static GET_MIGRATIONS: &str = "select tag from __migrant_migrations;";
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `SQLITE_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub static SQLITE_MIGRATION_TABLE_EXISTS: &str = "select exists(select 1 from sqlite_master where type = 'table' and name = '__migran...
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `PG_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub static PG_MIGRATION_TABLE_EXISTS: &str =
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MYSQL_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub static MYSQL_MIGRATION_TABLE_EXISTS: &str = "select exists(select 1 from information_schema.tables where table_name='__migrant_mi...
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `CREATE_TABLE` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub static CREATE_TABLE: &str = "create table __migrant_migrations(tag text unique);";
[INFO] [stdout]   |                ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MYSQL_CREATE_TABLE` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub static MYSQL_CREATE_TABLE: &str =
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `GET_MIGRATIONS` is never used
[INFO] [stdout]  --> src/drivers/mod.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub static GET_MIGRATIONS: &str = "select tag from __migrant_migrations;";
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `SQLITE_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub static SQLITE_MIGRATION_TABLE_EXISTS: &str = "select exists(select 1 from sqlite_master where type = 'table' and name = '__migran...
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `PG_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub static PG_MIGRATION_TABLE_EXISTS: &str =
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MYSQL_MIGRATION_TABLE_EXISTS` is never used
[INFO] [stdout]   --> src/drivers/mod.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub static MYSQL_MIGRATION_TABLE_EXISTS: &str = "select exists(select 1 from information_schema.tables where table_name='__migrant_mi...
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.72s
[INFO] running `Command { std: "docker" "inspect" "c92573b502c544b2258862d2ec114a782d379cb88e541604bd68b5f0d6e5f55c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c92573b502c544b2258862d2ec114a782d379cb88e541604bd68b5f0d6e5f55c", kill_on_drop: false }`
[INFO] [stdout] c92573b502c544b2258862d2ec114a782d379cb88e541604bd68b5f0d6e5f55c