[INFO] cloning repository https://github.com/EgorkaZ/play-with-lalrpop [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EgorkaZ/play-with-lalrpop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEgorkaZ%2Fplay-with-lalrpop", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEgorkaZ%2Fplay-with-lalrpop'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5476050213b15ab7735c44c9bb1302567fa08399 [INFO] testing EgorkaZ/play-with-lalrpop against 1.54.0 for beta-1.55-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEgorkaZ%2Fplay-with-lalrpop" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/EgorkaZ/play-with-lalrpop on toolchain 1.54.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/EgorkaZ/play-with-lalrpop [INFO] finished tweaking git repo https://github.com/EgorkaZ/play-with-lalrpop [INFO] tweaked toml for git repo https://github.com/EgorkaZ/play-with-lalrpop written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/EgorkaZ/play-with-lalrpop already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8e4fb0ab6540d8d358d06de2b32b8ba750cbeed33f93f772f4b2c4b4e3b72887 [INFO] running `Command { std: "docker" "start" "-a" "8e4fb0ab6540d8d358d06de2b32b8ba750cbeed33f93f772f4b2c4b4e3b72887", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8e4fb0ab6540d8d358d06de2b32b8ba750cbeed33f93f772f4b2c4b4e3b72887", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8e4fb0ab6540d8d358d06de2b32b8ba750cbeed33f93f772f4b2c4b4e3b72887", kill_on_drop: false }` [INFO] [stdout] 8e4fb0ab6540d8d358d06de2b32b8ba750cbeed33f93f772f4b2c4b4e3b72887 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 18c0523251f49054df7907ec2611defa0a6732509ed27ebf9b1c5b71edf5c212 [INFO] running `Command { std: "docker" "start" "-a" "18c0523251f49054df7907ec2611defa0a6732509ed27ebf9b1c5b71edf5c212", kill_on_drop: false }` [INFO] [stderr] Compiling siphasher v0.3.6 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling itertools v0.10.1 [INFO] [stderr] Compiling dirs-sys-next v0.1.2 [INFO] [stderr] Compiling petgraph v0.5.1 [INFO] [stderr] Compiling lalrpop-util v0.19.6 [INFO] [stderr] Compiling phf_shared v0.8.0 [INFO] [stderr] Compiling dirs-next v2.0.0 [INFO] [stderr] Compiling string_cache v0.8.1 [INFO] [stderr] Compiling term v0.7.0 [INFO] [stderr] Compiling ascii-canvas v3.0.0 [INFO] [stderr] Compiling lalrpop v0.19.6 [INFO] [stderr] Compiling parsers_try v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/matcher/expr_matcher.rs:174:30 [INFO] [stdout] | [INFO] [stdout] 174 | fn substitute(&mut self, key: &char, subst: Rc) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` 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/matcher/helpers.rs:17:13 [INFO] [stdout] | [INFO] [stdout] 8 | fn check_substitution(&mut self, key: &Key, subst: &Rc) -> Result<(), &'_ Rc> [INFO] [stdout] | - let's call the lifetime of this reference `'1` [INFO] [stdout] 9 | { [INFO] [stdout] 10 | if let Some(found) = self.get_subst(&key) { [INFO] [stdout] | ---- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 14 | Err(found) [INFO] [stdout] | ---------- returning this value requires that `*self` is borrowed for `'1` [INFO] [stdout] ... [INFO] [stdout] 17 | self.substitute(key, Rc::clone(subst)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0502`. [INFO] [stdout] [INFO] [stderr] error: could not compile `parsers_try` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `Command { std: "docker" "inspect" "18c0523251f49054df7907ec2611defa0a6732509ed27ebf9b1c5b71edf5c212", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "18c0523251f49054df7907ec2611defa0a6732509ed27ebf9b1c5b71edf5c212", kill_on_drop: false }` [INFO] [stdout] 18c0523251f49054df7907ec2611defa0a6732509ed27ebf9b1c5b71edf5c212