[INFO] fetching crate string-sharp 0.1.10...
[INFO] testing string-sharp-0.1.10 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate string-sharp 0.1.10 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate string-sharp 0.1.10
[INFO] finished tweaking crates.io crate string-sharp 0.1.10
[INFO] tweaked toml for crates.io crate string-sharp 0.1.10 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate string-sharp 0.1.10 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 31 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1884ef62a2a26773c6d4a3d05525260583c9e35391e3d3b2e60444f455e21ea5
[INFO] running `Command { std: "docker" "start" "-a" "1884ef62a2a26773c6d4a3d05525260583c9e35391e3d3b2e60444f455e21ea5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1884ef62a2a26773c6d4a3d05525260583c9e35391e3d3b2e60444f455e21ea5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1884ef62a2a26773c6d4a3d05525260583c9e35391e3d3b2e60444f455e21ea5", kill_on_drop: false }`
[INFO] [stdout] 1884ef62a2a26773c6d4a3d05525260583c9e35391e3d3b2e60444f455e21ea5
[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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d1a9fbc272c0e34a7aedd21f5a27c5ac312b5962bb1731d7545f53758842f35
[INFO] running `Command { std: "docker" "start" "-a" "7d1a9fbc272c0e34a7aedd21f5a27c5ac312b5962bb1731d7545f53758842f35", kill_on_drop: false }`
[INFO] [stderr]    Compiling iana-time-zone v0.1.65
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling string-sharp v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `idx` is never read
[INFO] [stdout]    --> src/common.rs:114:30
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let mut idx: usize = 0;
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Append` is never used
[INFO] [stdout]  --> src/common.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Append {
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Left` is never used
[INFO] [stdout]   --> src/common.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait Left{
[INFO] [stdout]    |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Right` is never used
[INFO] [stdout]   --> src/common.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub trait Right{
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Strip` is never used
[INFO] [stdout]   --> src/common.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub trait Strip{
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `StripChars` is never used
[INFO] [stdout]   --> src/common.rs:66:11
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub trait StripChars{
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Reverse` is never used
[INFO] [stdout]   --> src/common.rs:79:11
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub trait Reverse{
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IndexOf` is never used
[INFO] [stdout]   --> src/common.rs:91:11
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub trait IndexOf{
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IndiciesOf` is never used
[INFO] [stdout]    --> src/common.rs:105:11
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub trait IndiciesOf{
[INFO] [stdout]     |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PadRight` is never used
[INFO] [stdout]    --> src/common.rs:140:11
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub trait PadRight{
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PadLeft` is never used
[INFO] [stdout]    --> src/common.rs:155:11
[INFO] [stdout]     |
[INFO] [stdout] 155 | pub trait PadLeft{
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LastIndexOf` is never used
[INFO] [stdout]    --> src/common.rs:170:11
[INFO] [stdout]     |
[INFO] [stdout] 170 | pub trait LastIndexOf{
[INFO] [stdout]     |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ToLower` is never used
[INFO] [stdout]    --> src/common.rs:184:11
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub trait ToLower{
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ToUpper` is never used
[INFO] [stdout]    --> src/common.rs:197:11
[INFO] [stdout]     |
[INFO] [stdout] 197 | pub trait ToUpper{
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TrimEnd` is never used
[INFO] [stdout]    --> src/common.rs:209:11
[INFO] [stdout]     |
[INFO] [stdout] 209 | pub trait TrimEnd{
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TrimStart` is never used
[INFO] [stdout]    --> src/common.rs:240:11
[INFO] [stdout]     |
[INFO] [stdout] 240 | pub trait TrimStart{
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AppendDate` is never used
[INFO] [stdout]   --> src/string_date.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait AppendDate{
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AppendTime` is never used
[INFO] [stdout]   --> src/string_date.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub trait AppendTime{
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/common.rs:219:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |             if idx < 0{
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.37s
[INFO] running `Command { std: "docker" "inspect" "7d1a9fbc272c0e34a7aedd21f5a27c5ac312b5962bb1731d7545f53758842f35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d1a9fbc272c0e34a7aedd21f5a27c5ac312b5962bb1731d7545f53758842f35", kill_on_drop: false }`
[INFO] [stdout] 7d1a9fbc272c0e34a7aedd21f5a27c5ac312b5962bb1731d7545f53758842f35
[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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26531fdf2597b1813f36fd0d9f0760412dc50b3a98612ddc6c4766ec0e515f9e
[INFO] running `Command { std: "docker" "start" "-a" "26531fdf2597b1813f36fd0d9f0760412dc50b3a98612ddc6c4766ec0e515f9e", kill_on_drop: false }`
[INFO] [stdout] warning: value assigned to `idx` is never read
[INFO] [stdout]    --> src/common.rs:114:30
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let mut idx: usize = 0;
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Append` is never used
[INFO] [stdout]  --> src/common.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Append {
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Left` is never used
[INFO] [stdout]   --> src/common.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait Left{
[INFO] [stdout]    |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Right` is never used
[INFO] [stdout]   --> src/common.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub trait Right{
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Strip` is never used
[INFO] [stdout]   --> src/common.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub trait Strip{
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `StripChars` is never used
[INFO] [stdout]   --> src/common.rs:66:11
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub trait StripChars{
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Reverse` is never used
[INFO] [stdout]   --> src/common.rs:79:11
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub trait Reverse{
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IndexOf` is never used
[INFO] [stdout]   --> src/common.rs:91:11
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub trait IndexOf{
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IndiciesOf` is never used
[INFO] [stdout]    --> src/common.rs:105:11
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub trait IndiciesOf{
[INFO] [stdout]     |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PadRight` is never used
[INFO] [stdout]    --> src/common.rs:140:11
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub trait PadRight{
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PadLeft` is never used
[INFO] [stdout]    --> src/common.rs:155:11
[INFO] [stdout]     |
[INFO] [stdout] 155 | pub trait PadLeft{
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LastIndexOf` is never used
[INFO] [stdout]    --> src/common.rs:170:11
[INFO] [stdout]     |
[INFO] [stdout] 170 | pub trait LastIndexOf{
[INFO] [stdout]     |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ToLower` is never used
[INFO] [stdout]    --> src/common.rs:184:11
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub trait ToLower{
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ToUpper` is never used
[INFO] [stdout]    --> src/common.rs:197:11
[INFO] [stdout]     |
[INFO] [stdout] 197 | pub trait ToUpper{
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TrimEnd` is never used
[INFO] [stdout]    --> src/common.rs:209:11
[INFO] [stdout]     |
[INFO] [stdout] 209 | pub trait TrimEnd{
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TrimStart` is never used
[INFO] [stdout]    --> src/common.rs:240:11
[INFO] [stdout]     |
[INFO] [stdout] 240 | pub trait TrimStart{
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AppendDate` is never used
[INFO] [stdout]   --> src/string_date.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait AppendDate{
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling string-sharp v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `AppendTime` is never used
[INFO] [stdout]   --> src/string_date.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub trait AppendTime{
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/common.rs:219:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |             if idx < 0{
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `idx` is never read
[INFO] [stdout]    --> src/common.rs:114:30
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let mut idx: usize = 0;
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PadRight` is never used
[INFO] [stdout]    --> src/common.rs:140:11
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub trait PadRight{
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PadLeft` is never used
[INFO] [stdout]    --> src/common.rs:155:11
[INFO] [stdout]     |
[INFO] [stdout] 155 | pub trait PadLeft{
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LastIndexOf` is never used
[INFO] [stdout]    --> src/common.rs:170:11
[INFO] [stdout]     |
[INFO] [stdout] 170 | pub trait LastIndexOf{
[INFO] [stdout]     |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ToLower` is never used
[INFO] [stdout]    --> src/common.rs:184:11
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub trait ToLower{
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AppendDate` is never used
[INFO] [stdout]   --> src/string_date.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait AppendDate{
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AppendTime` is never used
[INFO] [stdout]   --> src/string_date.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub trait AppendTime{
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_append_date` is never used
[INFO] [stdout]   --> src/lib.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn test_append_date() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_to_lower` is never used
[INFO] [stdout]   --> src/lib.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn test_to_lower(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/common.rs:219:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |             if idx < 0{
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "26531fdf2597b1813f36fd0d9f0760412dc50b3a98612ddc6c4766ec0e515f9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26531fdf2597b1813f36fd0d9f0760412dc50b3a98612ddc6c4766ec0e515f9e", kill_on_drop: false }`
[INFO] [stdout] 26531fdf2597b1813f36fd0d9f0760412dc50b3a98612ddc6c4766ec0e515f9e
[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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7f7dca278534071bdf3e1575fe48e2acedaf0230d94a470cbb380f904dece8e5
[INFO] running `Command { std: "docker" "start" "-a" "7f7dca278534071bdf3e1575fe48e2acedaf0230d94a470cbb380f904dece8e5", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `idx` is never read
[INFO] [stderr]    --> src/common.rs:114:30
[INFO] [stderr]     |
[INFO] [stderr] 114 |         let mut idx: usize = 0;
[INFO] [stderr]     |                              ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Append` is never used
[INFO] [stderr]  --> src/common.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub trait Append {
[INFO] [stderr]   |           ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Left` is never used
[INFO] [stderr]   --> src/common.rs:19:11
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub trait Left{
[INFO] [stderr]    |           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Right` is never used
[INFO] [stderr]   --> src/common.rs:34:11
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub trait Right{
[INFO] [stderr]    |           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Strip` is never used
[INFO] [stderr]   --> src/common.rs:56:15
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub trait Strip{
[INFO] [stderr]    |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `StripChars` is never used
[INFO] [stderr]   --> src/common.rs:66:11
[INFO] [stderr]    |
[INFO] [stderr] 66 | pub trait StripChars{
[INFO] [stderr]    |           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Reverse` is never used
[INFO] [stderr]   --> src/common.rs:79:11
[INFO] [stderr]    |
[INFO] [stderr] 79 | pub trait Reverse{
[INFO] [stderr]    |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `IndexOf` is never used
[INFO] [stderr]   --> src/common.rs:91:11
[INFO] [stderr]    |
[INFO] [stderr] 91 | pub trait IndexOf{
[INFO] [stderr]    |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `IndiciesOf` is never used
[INFO] [stderr]    --> src/common.rs:105:11
[INFO] [stderr]     |
[INFO] [stderr] 105 | pub trait IndiciesOf{
[INFO] [stderr]     |           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `PadRight` is never used
[INFO] [stderr]    --> src/common.rs:140:11
[INFO] [stderr]     |
[INFO] [stderr] 140 | pub trait PadRight{
[INFO] [stderr]     |           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `PadLeft` is never used
[INFO] [stderr]    --> src/common.rs:155:11
[INFO] [stderr]     |
[INFO] [stderr] 155 | pub trait PadLeft{
[INFO] [stderr]     |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `LastIndexOf` is never used
[INFO] [stderr]    --> src/common.rs:170:11
[INFO] [stderr]     |
[INFO] [stderr] 170 | pub trait LastIndexOf{
[INFO] [stderr]     |           ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `ToLower` is never used
[INFO] [stderr]    --> src/common.rs:184:11
[INFO] [stderr]     |
[INFO] [stderr] 184 | pub trait ToLower{
[INFO] [stderr]     |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `ToUpper` is never used
[INFO] [stderr]    --> src/common.rs:197:11
[INFO] [stderr]     |
[INFO] [stderr] 197 | pub trait ToUpper{
[INFO] [stderr]     |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `TrimEnd` is never used
[INFO] [stderr]    --> src/common.rs:209:11
[INFO] [stderr]     |
[INFO] [stderr] 209 | pub trait TrimEnd{
[INFO] [stderr]     |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `TrimStart` is never used
[INFO] [stderr]    --> src/common.rs:240:11
[INFO] [stderr]     |
[INFO] [stderr] 240 | pub trait TrimStart{
[INFO] [stderr]     |           ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `AppendDate` is never used
[INFO] [stderr]   --> src/string_date.rs:10:11
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub trait AppendDate{
[INFO] [stderr]    |           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `AppendTime` is never used
[INFO] [stderr]   --> src/string_date.rs:25:11
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub trait AppendTime{
[INFO] [stderr]    |           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/common.rs:219:16
[INFO] [stderr]     |
[INFO] [stderr] 219 |             if idx < 0{
[INFO] [stderr]     |                ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `PadRight` is never used
[INFO] [stderr]    --> src/common.rs:140:11
[INFO] [stderr]     |
[INFO] [stderr] 140 | pub trait PadRight{
[INFO] [stderr]     |           ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_append_date` is never used
[INFO] [stderr]   --> src/lib.rs:54:8
[INFO] [stderr]    |
[INFO] [stderr] 54 |     fn test_append_date() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_to_lower` is never used
[INFO] [stderr]   --> src/lib.rs:98:8
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn test_to_lower(){
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `string-sharp` (lib) generated 19 warnings
[INFO] [stderr] warning: `string-sharp` (lib test) generated 10 warnings (7 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/string_sharp-43b101c9d216e718)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test tests::test_index_of ... ok
[INFO] [stdout] test tests::test_indicies_of ... ok
[INFO] [stdout] test tests::test_left ... ok
[INFO] [stdout] test tests::test_reverse ... ok
[INFO] [stdout] test tests::test_strip_chars ... ok
[INFO] [stdout] test tests::test_to_upper ... ok
[INFO] [stdout] test tests::test_trim_end ... ok
[INFO] [stdout] test tests::test_trim_start ... ok
[INFO] [stdout] test tests::test_append ... ok
[INFO] [stderr]    Doc-tests string_sharp
[INFO] [stdout] test tests::test_strip ... ok
[INFO] [stdout] test tests::test_right ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 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" "7f7dca278534071bdf3e1575fe48e2acedaf0230d94a470cbb380f904dece8e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f7dca278534071bdf3e1575fe48e2acedaf0230d94a470cbb380f904dece8e5", kill_on_drop: false }`
[INFO] [stdout] 7f7dca278534071bdf3e1575fe48e2acedaf0230d94a470cbb380f904dece8e5