[INFO] cloning repository https://github.com/WJZ-P/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WJZ-P/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWJZ-P%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWJZ-P%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b0351399716c5781d8bc81f43099ee60f947228
[INFO] fixing WJZ-P/rust_study against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWJZ-P%2Frust_study" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/WJZ-P/rust_study
[INFO] finished tweaking git repo https://github.com/WJZ-P/rust_study
[INFO] tweaked toml for git repo https://github.com/WJZ-P/rust_study written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/WJZ-P/rust_study on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/WJZ-P/rust_study 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 57c3110af036b2ba5e6e637221c6423db633769869aa0b53d69ca4300f8f95d6
[INFO] running `Command { std: "docker" "start" "57c3110af036b2ba5e6e637221c6423db633769869aa0b53d69ca4300f8f95d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "57c3110af036b2ba5e6e637221c6423db633769869aa0b53d69ca4300f8f95d6" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57c3110af036b2ba5e6e637221c6423db633769869aa0b53d69ca4300f8f95d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "57c3110af036b2ba5e6e637221c6423db633769869aa0b53d69ca4300f8f95d6" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Deref;
[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::Deref`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the type `str` cannot be indexed by `{integer}`
[INFO] [stdout]  --> src/main.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let h = s1[0];
[INFO] [stdout]   |                ^ string indices are ranges of `usize`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `SliceIndex<str>` is not implemented for `{integer}`
[INFO] [stdout]   = note: you can use `.chars().nth()` or `.bytes().nth()`
[INFO] [stdout]           for more information, see chapter 8 in The Book: <https://doc.rust-lang.org/book/ch08-02-strings.html#indexing-into-strings>
[INFO] [stdout] help: `usize` implements trait `SliceIndex<T>`
[INFO] [stdout]  --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/core/src/slice/index.rs:174:0
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SliceIndex<[T]>`
[INFO] [stdout]  --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/core/src/bstr/traits.rs:197:0
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SliceIndex<ByteStr>`
[INFO] [stdout]   = note: required for `String` to implement `Index<{integer}>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the type `str` cannot be indexed by `{integer}`
[INFO] [stdout]  --> src/main.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let h = s1[0];
[INFO] [stdout]   |                ^ string indices are ranges of `usize`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `SliceIndex<str>` is not implemented for `{integer}`
[INFO] [stdout]   = note: you can use `.chars().nth()` or `.bytes().nth()`
[INFO] [stdout]           for more information, see chapter 8 in The Book: <https://doc.rust-lang.org/book/ch08-02-strings.html#indexing-into-strings>
[INFO] [stdout] help: `usize` implements trait `SliceIndex<T>`
[INFO] [stdout]  --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/core/src/slice/index.rs:174:0
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SliceIndex<[T]>`
[INFO] [stdout]  --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/core/src/bstr/traits.rs:197:0
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SliceIndex<ByteStr>`
[INFO] [stdout]   = note: required for `String` to implement `Index<{integer}>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_study` (bin "rust_study" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust_study` (bin "rust_study") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "57c3110af036b2ba5e6e637221c6423db633769869aa0b53d69ca4300f8f95d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57c3110af036b2ba5e6e637221c6423db633769869aa0b53d69ca4300f8f95d6", kill_on_drop: false }`
[INFO] [stdout] 57c3110af036b2ba5e6e637221c6423db633769869aa0b53d69ca4300f8f95d6
