[INFO] fetching crate string-sharp 0.1.10...
[INFO] checking string-sharp-0.1.10 against master#0fb279be1d96464c69209053ef0f97ad63088cda for pr-143857
[INFO] extracting crate string-sharp 0.1.10 into /workspace/builds/worker-1-tc1/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-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate string-sharp 0.1.10 on toolchain 0fb279be1d96464c69209053ef0f97ad63088cda
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0fb279be1d96464c69209053ef0f97ad63088cda" "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" "+0fb279be1d96464c69209053ef0f97ad63088cda" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0fb279be1d96464c69209053ef0f97ad63088cda" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+0fb279be1d96464c69209053ef0f97ad63088cda" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 67a62a04044a6434f80c9a609924541c91b52257d5ccc27a9766ee633b5cfac4
[INFO] running `Command { std: "docker" "start" "-a" "67a62a04044a6434f80c9a609924541c91b52257d5ccc27a9766ee633b5cfac4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67a62a04044a6434f80c9a609924541c91b52257d5ccc27a9766ee633b5cfac4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67a62a04044a6434f80c9a609924541c91b52257d5ccc27a9766ee633b5cfac4", kill_on_drop: false }`
[INFO] [stdout] 67a62a04044a6434f80c9a609924541c91b52257d5ccc27a9766ee633b5cfac4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+0fb279be1d96464c69209053ef0f97ad63088cda" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3999df0793b42be8fe1cb42d27419728700e4880f97816ed043570a2e1d12a75
[INFO] running `Command { std: "docker" "start" "-a" "3999df0793b42be8fe1cb42d27419728700e4880f97816ed043570a2e1d12a75", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]     Checking iana-time-zone v0.1.63
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking chrono v0.4.41
[INFO] [stderr]     Checking string-sharp v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `idx` is never read
[INFO] [stdout]    --> src/common.rs:114:17
[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)]` 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)]` 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: value assigned to `idx` is never read
[INFO] [stdout]    --> src/common.rs:114:17
[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)]` on by default
[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] [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)]` 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 `dev` profile [unoptimized + debuginfo] target(s) in 3.85s
[INFO] running `Command { std: "docker" "inspect" "3999df0793b42be8fe1cb42d27419728700e4880f97816ed043570a2e1d12a75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3999df0793b42be8fe1cb42d27419728700e4880f97816ed043570a2e1d12a75", kill_on_drop: false }`
[INFO] [stdout] 3999df0793b42be8fe1cb42d27419728700e4880f97816ed043570a2e1d12a75