[INFO] fetching crate imstr 0.2.0...
[INFO] checking imstr-0.2.0 against 1.95.0 for pr-155915
[INFO] extracting crate imstr 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate imstr 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate imstr 0.2.0
[INFO] tweaked toml for crates.io crate imstr 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate imstr 0.2.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate imstr 0.2.0 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" "+1.95.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded peg-runtime v0.8.1
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.15
[INFO] [stderr]   Downloaded peg-macros v0.8.1
[INFO] [stderr]   Downloaded ciborium-io v0.2.0
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[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.84
[INFO] [stderr]   Downloaded plotters-backend v0.3.4
[INFO] [stderr]   Downloaded serde v1.0.159
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.84
[INFO] [stderr]   Downloaded peg v0.8.1
[INFO] [stderr]   Downloaded os_str_bytes v6.5.0
[INFO] [stderr]   Downloaded ciborium v0.2.0
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.84
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.14
[INFO] [stderr]   Downloaded serde_derive v1.0.159
[INFO] [stderr]   Downloaded js-sys v0.3.61
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[INFO] [stderr]   Downloaded plotters v0.3.4
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.84
[INFO] [stderr]   Downloaded serde_json v1.0.95
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[INFO] [stderr]   Downloaded syn v2.0.13
[INFO] [stderr]   Downloaded web-sys v0.3.61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4c9f2909089005204c6c0f2fba82673f04d873c7971d8904a4d75f492032fbe
[INFO] running `Command { std: "docker" "start" "-a" "e4c9f2909089005204c6c0f2fba82673f04d873c7971d8904a4d75f492032fbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4c9f2909089005204c6c0f2fba82673f04d873c7971d8904a4d75f492032fbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4c9f2909089005204c6c0f2fba82673f04d873c7971d8904a4d75f492032fbe", kill_on_drop: false }`
[INFO] [stdout] e4c9f2909089005204c6c0f2fba82673f04d873c7971d8904a4d75f492032fbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9802bf44cfea10d682f800aa326473faba288a4c21d8d5dbf2d49cab3d57725c
[INFO] running `Command { std: "docker" "start" "-a" "9802bf44cfea10d682f800aa326473faba288a4c21d8d5dbf2d49cab3d57725c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling serde_derive v1.0.159
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling serde v1.0.159
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling serde_json v1.0.95
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking ciborium-io v0.2.0
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking os_str_bytes v6.5.0
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]     Checking ciborium-ll v0.2.0
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]    Compiling peg-runtime v0.8.1
[INFO] [stderr]     Checking walkdir v2.3.3
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking imstr v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking plotters-svg v0.3.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.7
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v3.2.23
[INFO] [stderr]    Compiling syn v2.0.13
[INFO] [stderr]    Compiling peg-macros v0.8.1
[INFO] [stderr]     Checking plotters v0.3.4
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking regex v1.7.3
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking peg v0.8.1
[INFO] [stderr]     Checking ciborium v0.2.0
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] warning: unused import: `std::cell::Cell`
[INFO] [stdout]  --> tests/string.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cell::Cell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Bound`
[INFO] [stdout]  --> tests/string.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::ops::Bound;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Bound::*`
[INFO] [stdout]  --> tests/string.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::ops::Bound::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::panic`
[INFO] [stdout]   --> tests/string.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::panic;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::RangeBounds`
[INFO] [stdout]  --> tests/string.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::ops::RangeBounds;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.24s
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> src/error.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         format!("{error:?}");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[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] 48 |         let _ = format!("{error:?}");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> src/error.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         format!("{new}");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let _ = format!("{new}");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> src/string.rs:1524:13
[INFO] [stdout]      |
[INFO] [stdout] 1524 |             drop(string_slice);
[INFO] [stdout]      |             ^^^^^------------^
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  argument has type `&mut str`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1524 -             drop(string_slice);
[INFO] [stdout] 1524 +             let _ = string_slice;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9802bf44cfea10d682f800aa326473faba288a4c21d8d5dbf2d49cab3d57725c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9802bf44cfea10d682f800aa326473faba288a4c21d8d5dbf2d49cab3d57725c", kill_on_drop: false }`
[INFO] [stdout] 9802bf44cfea10d682f800aa326473faba288a4c21d8d5dbf2d49cab3d57725c
