[INFO] cloning repository https://github.com/letsgetrusty/borrow-checker-repro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/letsgetrusty/borrow-checker-repro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletsgetrusty%2Fborrow-checker-repro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletsgetrusty%2Fborrow-checker-repro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eabfe63dcdd170d7f4f1c48f95fa5fa03948d5ae
[INFO] testing letsgetrusty/borrow-checker-repro against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletsgetrusty%2Fborrow-checker-repro" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/letsgetrusty/borrow-checker-repro
[INFO] finished tweaking git repo https://github.com/letsgetrusty/borrow-checker-repro
[INFO] tweaked toml for git repo https://github.com/letsgetrusty/borrow-checker-repro written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/letsgetrusty/borrow-checker-repro on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/letsgetrusty/borrow-checker-repro 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 13a3ba5afd237f4830c788c57ac505b3cfa2f46d380c4addb1f9cf3a87763348
[INFO] running `Command { std: "docker" "start" "-a" "13a3ba5afd237f4830c788c57ac505b3cfa2f46d380c4addb1f9cf3a87763348", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13a3ba5afd237f4830c788c57ac505b3cfa2f46d380c4addb1f9cf3a87763348", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13a3ba5afd237f4830c788c57ac505b3cfa2f46d380c4addb1f9cf3a87763348", kill_on_drop: false }`
[INFO] [stdout] 13a3ba5afd237f4830c788c57ac505b3cfa2f46d380c4addb1f9cf3a87763348
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb35bef65003a33ebeb071e5dc8aef4da32eee6aaa9f67ec7a9fc5cf469fe226
[INFO] running `Command { std: "docker" "start" "-a" "cb35bef65003a33ebeb071e5dc8aef4da32eee6aaa9f67ec7a9fc5cf469fe226", kill_on_drop: false }`
[INFO] [stderr]    Compiling borrow-error-repro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn method_2(&mut self, x: &AnotherStruct) {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let x = self.method_1();
[INFO] [stdout]    |                 ---- immutable borrow occurs here
[INFO] [stdout] 24 |         self.method_2(x);
[INFO] [stdout]    |         ^^^^^--------^^^
[INFO] [stdout]    |         |    |
[INFO] [stdout]    |         |    immutable borrow later used by call
[INFO] [stdout]    |         mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `borrow-error-repro` (bin "borrow-error-repro") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "cb35bef65003a33ebeb071e5dc8aef4da32eee6aaa9f67ec7a9fc5cf469fe226", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb35bef65003a33ebeb071e5dc8aef4da32eee6aaa9f67ec7a9fc5cf469fe226", kill_on_drop: false }`
[INFO] [stdout] cb35bef65003a33ebeb071e5dc8aef4da32eee6aaa9f67ec7a9fc5cf469fe226