[INFO] fetching crate unidb_pgsql 0.6.0...
[INFO] testing unidb_pgsql-0.6.0 against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739-1
[INFO] extracting crate unidb_pgsql 0.6.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate unidb_pgsql 0.6.0
[INFO] finished tweaking crates.io crate unidb_pgsql 0.6.0
[INFO] tweaked toml for crates.io crate unidb_pgsql 0.6.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unidb_pgsql 0.6.0 on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unidb_pgsql 0.6.0 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" "+33835004928d3bf65db4d4712e1330766263b0bd" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9101c49744d1eff95db621bd5befaca238cd1f414e5cb8612c6f5b6d285df7d8
[INFO] running `Command { std: "docker" "start" "-a" "9101c49744d1eff95db621bd5befaca238cd1f414e5cb8612c6f5b6d285df7d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9101c49744d1eff95db621bd5befaca238cd1f414e5cb8612c6f5b6d285df7d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9101c49744d1eff95db621bd5befaca238cd1f414e5cb8612c6f5b6d285df7d8", kill_on_drop: false }`
[INFO] [stdout] 9101c49744d1eff95db621bd5befaca238cd1f414e5cb8612c6f5b6d285df7d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1baf3d7794390749b458db7e2e83113f4f5b3adc38f8cee604a2c4e3968b9097
[INFO] running `Command { std: "docker" "start" "-a" "1baf3d7794390749b458db7e2e83113f4f5b3adc38f8cee604a2c4e3968b9097", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/pg_dao.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(t) =>  1,
[INFO] [stdout]    |            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]    |
[INFO] [stdout] 41 -         Ok(t) =>  1,
[INFO] [stdout] 41 +         Ok(pg_dao::_) =>  1,
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(_t) =>  1,
[INFO] [stdout]    |            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/pg_dao.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |         Ok(t) =>  (),
[INFO] [stdout]    |            ^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]    |
[INFO] [stdout] 50 -         Ok(t) =>  (),
[INFO] [stdout] 50 +         Ok(pg_dao::_) =>  (),
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 50 |         Ok(_t) =>  (),
[INFO] [stdout]    |            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/pg_dao.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |             let mut count = input.len();
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/pg_dao.rs:79:20
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 Ok(t) => (),
[INFO] [stdout]    |                    ^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]    |
[INFO] [stdout] 79 -                 Ok(t) => (),
[INFO] [stdout] 79 +                 Ok(pg_dao::_) => (),
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 Ok(_t) => (),
[INFO] [stdout]    |                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pg_dao.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |             let mut count = list.len();
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/pg_dao.rs:166:20
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 Ok(t) => (),
[INFO] [stdout]     |                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]     |
[INFO] [stdout] 166 -                 Ok(t) => (),
[INFO] [stdout] 166 +                 Ok(pg_dao::_) => (),
[INFO] [stdout]     |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 Ok(_t) => (),
[INFO] [stdout]     |                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/pg_dao.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 82 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/pg_dao.rs:121:21
[INFO] [stdout]     |
[INFO] [stdout] 121 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 121 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/pg_dao.rs:169:21
[INFO] [stdout]     |
[INFO] [stdout] 169 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 169 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 30s
[INFO] running `Command { std: "docker" "inspect" "1baf3d7794390749b458db7e2e83113f4f5b3adc38f8cee604a2c4e3968b9097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1baf3d7794390749b458db7e2e83113f4f5b3adc38f8cee604a2c4e3968b9097", kill_on_drop: false }`
[INFO] [stdout] 1baf3d7794390749b458db7e2e83113f4f5b3adc38f8cee604a2c4e3968b9097
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e6013ef3cbca8c4aae1bbbef75e8ae6a46be0380e4b5ba59ac3bbb405df19f6
[INFO] running `Command { std: "docker" "start" "-a" "2e6013ef3cbca8c4aae1bbbef75e8ae6a46be0380e4b5ba59ac3bbb405df19f6", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/pg_dao.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(t) =>  1,
[INFO] [stdout]    |            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]    |
[INFO] [stdout] 41 -         Ok(t) =>  1,
[INFO] [stdout] 41 +         Ok(pg_dao::_) =>  1,
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(_t) =>  1,
[INFO] [stdout]    |            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/pg_dao.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |         Ok(t) =>  (),
[INFO] [stdout]    |            ^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]    |
[INFO] [stdout] 50 -         Ok(t) =>  (),
[INFO] [stdout] 50 +         Ok(pg_dao::_) =>  (),
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 50 |         Ok(_t) =>  (),
[INFO] [stdout]    |            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/pg_dao.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |             let mut count = input.len();
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/pg_dao.rs:79:20
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 Ok(t) => (),
[INFO] [stdout]    |                    ^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]    |
[INFO] [stdout] 79 -                 Ok(t) => (),
[INFO] [stdout] 79 +                 Ok(pg_dao::_) => (),
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 Ok(_t) => (),
[INFO] [stdout]    |                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pg_dao.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |             let mut count = list.len();
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/pg_dao.rs:166:20
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 Ok(t) => (),
[INFO] [stdout]     |                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]     |
[INFO] [stdout] 166 -                 Ok(t) => (),
[INFO] [stdout] 166 +                 Ok(pg_dao::_) => (),
[INFO] [stdout]     |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 Ok(_t) => (),
[INFO] [stdout]     |                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/pg_dao.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 82 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/pg_dao.rs:121:21
[INFO] [stdout]     |
[INFO] [stdout] 121 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 121 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/pg_dao.rs:169:21
[INFO] [stdout]     |
[INFO] [stdout] 169 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 169 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling unidb_pgsql v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/pg_dao.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(t) =>  1,
[INFO] [stdout]    |            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]    |
[INFO] [stdout] 41 -         Ok(t) =>  1,
[INFO] [stdout] 41 +         Ok(pg_dao::_) =>  1,
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(_t) =>  1,
[INFO] [stdout]    |            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/pg_dao.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |         Ok(t) =>  (),
[INFO] [stdout]    |            ^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]    |
[INFO] [stdout] 50 -         Ok(t) =>  (),
[INFO] [stdout] 50 +         Ok(pg_dao::_) =>  (),
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 50 |         Ok(_t) =>  (),
[INFO] [stdout]    |            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/pg_dao.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |             let mut count = input.len();
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/pg_dao.rs:79:20
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 Ok(t) => (),
[INFO] [stdout]    |                    ^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]    |
[INFO] [stdout] 79 -                 Ok(t) => (),
[INFO] [stdout] 79 +                 Ok(pg_dao::_) => (),
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 Ok(_t) => (),
[INFO] [stdout]    |                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pg_dao.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |             let mut count = list.len();
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/pg_dao.rs:166:20
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 Ok(t) => (),
[INFO] [stdout]     |                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stdout]     |
[INFO] [stdout] 166 -                 Ok(t) => (),
[INFO] [stdout] 166 +                 Ok(pg_dao::_) => (),
[INFO] [stdout]     |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 Ok(_t) => (),
[INFO] [stdout]     |                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/pg_dao.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 82 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/pg_dao.rs:121:21
[INFO] [stdout]     |
[INFO] [stdout] 121 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 121 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/pg_dao.rs:169:21
[INFO] [stdout]     |
[INFO] [stdout] 169 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 169 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "2e6013ef3cbca8c4aae1bbbef75e8ae6a46be0380e4b5ba59ac3bbb405df19f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e6013ef3cbca8c4aae1bbbef75e8ae6a46be0380e4b5ba59ac3bbb405df19f6", kill_on_drop: false }`
[INFO] [stdout] 2e6013ef3cbca8c4aae1bbbef75e8ae6a46be0380e4b5ba59ac3bbb405df19f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ad39065bc552175106a4ab1955a46e8cc41a88a407a5a4997ad28778819ae778
[INFO] running `Command { std: "docker" "start" "-a" "ad39065bc552175106a4ab1955a46e8cc41a88a407a5a4997ad28778819ae778", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/pg_dao.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 |         Ok(t) =>  1,
[INFO] [stderr]    |            ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stderr]    |
[INFO] [stderr] 41 -         Ok(t) =>  1,
[INFO] [stderr] 41 +         Ok(pg_dao::_) =>  1,
[INFO] [stderr]    |
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]    |
[INFO] [stderr] 41 |         Ok(_t) =>  1,
[INFO] [stderr]    |            +
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/pg_dao.rs:50:12
[INFO] [stderr]    |
[INFO] [stderr] 50 |         Ok(t) =>  (),
[INFO] [stderr]    |            ^
[INFO] [stderr]    |
[INFO] [stderr] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stderr]    |
[INFO] [stderr] 50 -         Ok(t) =>  (),
[INFO] [stderr] 50 +         Ok(pg_dao::_) =>  (),
[INFO] [stderr]    |
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]    |
[INFO] [stderr] 50 |         Ok(_t) =>  (),
[INFO] [stderr]    |            +
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pg_dao.rs:70:17
[INFO] [stderr]    |
[INFO] [stderr] 70 |             let mut count = input.len();
[INFO] [stderr]    |                 ----^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/pg_dao.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 Ok(t) => (),
[INFO] [stderr]    |                    ^
[INFO] [stderr]    |
[INFO] [stderr] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stderr]    |
[INFO] [stderr] 79 -                 Ok(t) => (),
[INFO] [stderr] 79 +                 Ok(pg_dao::_) => (),
[INFO] [stderr]    |
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 Ok(_t) => (),
[INFO] [stderr]    |                    +
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/pg_dao.rs:157:17
[INFO] [stderr]     |
[INFO] [stderr] 157 |             let mut count = list.len();
[INFO] [stderr]     |                 ----^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/pg_dao.rs:166:20
[INFO] [stderr]     |
[INFO] [stderr] 166 |                 Ok(t) => (),
[INFO] [stderr]     |                    ^
[INFO] [stderr]     |
[INFO] [stderr] help: you might have meant to pattern match on the similarly named constant `_`
[INFO] [stderr]     |
[INFO] [stderr] 166 -                 Ok(t) => (),
[INFO] [stderr] 166 +                 Ok(pg_dao::_) => (),
[INFO] [stderr]     |
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]     |
[INFO] [stderr] 166 |                 Ok(_t) => (),
[INFO] [stderr]     |                    +
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/pg_dao.rs:82:21
[INFO] [stderr]    |
[INFO] [stderr] 82 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 82 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stderr]    |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/pg_dao.rs:121:21
[INFO] [stderr]     |
[INFO] [stderr] 121 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 121 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/pg_dao.rs:169:21
[INFO] [stderr]     |
[INFO] [stderr] 169 |                     &transaction.rollback().unwrap_or_default();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 169 |                     let _ = &transaction.rollback().unwrap_or_default();
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `unidb_pgsql` (lib) generated 9 warnings (run `cargo fix --lib -p unidb_pgsql` to apply 6 suggestions)
[INFO] [stderr] warning: `unidb_pgsql` (lib test) generated 9 warnings (9 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/unidb_pgsql-d6bc10eb26c6af30)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests unidb_pgsql
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ad39065bc552175106a4ab1955a46e8cc41a88a407a5a4997ad28778819ae778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad39065bc552175106a4ab1955a46e8cc41a88a407a5a4997ad28778819ae778", kill_on_drop: false }`
[INFO] [stdout] ad39065bc552175106a4ab1955a46e8cc41a88a407a5a4997ad28778819ae778
