[INFO] cloning repository https://github.com/reidswan/rlox [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/reidswan/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freidswan%2Frlox", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freidswan%2Frlox'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2b926b2c59ce1f8b7be8bec6dfbf1aaaceb9ebab [INFO] checking reidswan/rlox against master#0ef0dd24510b52da980889546fcd15254dc56a23 for pr-126452 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freidswan%2Frlox" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/reidswan/rlox on toolchain 0ef0dd24510b52da980889546fcd15254dc56a23 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0ef0dd24510b52da980889546fcd15254dc56a23" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/reidswan/rlox [INFO] finished tweaking git repo https://github.com/reidswan/rlox [INFO] tweaked toml for git repo https://github.com/reidswan/rlox written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/reidswan/rlox 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" "+0ef0dd24510b52da980889546fcd15254dc56a23" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking reidswan/rlox against try#d9cbfeb054d7bd02cf942e6d32c1c0a91f042ce9 for pr-126452 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freidswan%2Frlox" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/reidswan/rlox on toolchain d9cbfeb054d7bd02cf942e6d32c1c0a91f042ce9 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d9cbfeb054d7bd02cf942e6d32c1c0a91f042ce9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/reidswan/rlox [INFO] finished tweaking git repo https://github.com/reidswan/rlox [INFO] tweaked toml for git repo https://github.com/reidswan/rlox written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/reidswan/rlox 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" "+d9cbfeb054d7bd02cf942e6d32c1c0a91f042ce9" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+d9cbfeb054d7bd02cf942e6d32c1c0a91f042ce9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 60ff345e30d546468bb64b3d310dd523c9846586feb5a2cc8aae547693c6f98c [INFO] running `Command { std: "docker" "start" "-a" "60ff345e30d546468bb64b3d310dd523c9846586feb5a2cc8aae547693c6f98c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "60ff345e30d546468bb64b3d310dd523c9846586feb5a2cc8aae547693c6f98c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "60ff345e30d546468bb64b3d310dd523c9846586feb5a2cc8aae547693c6f98c", kill_on_drop: false }` [INFO] [stdout] 60ff345e30d546468bb64b3d310dd523c9846586feb5a2cc8aae547693c6f98c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+d9cbfeb054d7bd02cf942e6d32c1c0a91f042ce9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 01d71e06eb42d368977e727b3cd0431f84d6a7893ed1d4abff2ff2dcd677e756 [INFO] running `Command { std: "docker" "start" "-a" "01d71e06eb42d368977e727b3cd0431f84d6a7893ed1d4abff2ff2dcd677e756", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking unicode-width v0.1.7 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking treelox v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: this function depends on never type fallback being `()` [INFO] [stdout] --> src/interpeter.rs:43:5 [INFO] [stdout] | [INFO] [stdout] 43 | pub fn interpret(&mut self, statements: Vec) -> Result<(), String> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #123748 [INFO] [stdout] = help: specify the types explicitly [INFO] [stdout] = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this function depends on never type fallback being `()` [INFO] [stdout] --> src/interpeter.rs:43:5 [INFO] [stdout] | [INFO] [stdout] 43 | pub fn interpret(&mut self, statements: Vec) -> Result<(), String> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #123748 [INFO] [stdout] = help: specify the types explicitly [INFO] [stdout] = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/parser.rs:89:9 [INFO] [stdout] | [INFO] [stdout] 89 | / if let $token_type = token { [INFO] [stdout] 90 | | $self.advance(); [INFO] [stdout] 91 | | Ok(line) [INFO] [stdout] 92 | | } else { [INFO] [stdout] ... | [INFO] [stdout] 96 | | )) [INFO] [stdout] 97 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] ... [INFO] [stdout] 236 | consume!(self, Token::Semicolon); [INFO] [stdout] | -------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this warning originates in the macro `consume` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 89 ~ let _ = if let $token_type = token { [INFO] [stdout] 90 | $self.advance(); [INFO] [stdout] ... [INFO] [stdout] 96 | )) [INFO] [stdout] 97 ~ }; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/parser.rs:89:9 [INFO] [stdout] | [INFO] [stdout] 89 | / if let $token_type = token { [INFO] [stdout] 90 | | $self.advance(); [INFO] [stdout] 91 | | Ok(line) [INFO] [stdout] 92 | | } else { [INFO] [stdout] ... | [INFO] [stdout] 96 | | )) [INFO] [stdout] 97 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] ... [INFO] [stdout] 236 | consume!(self, Token::Semicolon); [INFO] [stdout] | -------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this warning originates in the macro `consume` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 89 ~ let _ = if let $token_type = token { [INFO] [stdout] 90 | $self.advance(); [INFO] [stdout] ... [INFO] [stdout] 96 | )) [INFO] [stdout] 97 ~ }; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/parser.rs:89:9 [INFO] [stdout] | [INFO] [stdout] 89 | / if let $token_type = token { [INFO] [stdout] 90 | | $self.advance(); [INFO] [stdout] 91 | | Ok(line) [INFO] [stdout] 92 | | } else { [INFO] [stdout] ... | [INFO] [stdout] 96 | | )) [INFO] [stdout] 97 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] ... [INFO] [stdout] 249 | consume!(self, Token::Semicolon); [INFO] [stdout] | -------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `consume` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 89 ~ let _ = if let $token_type = token { [INFO] [stdout] 90 | $self.advance(); [INFO] [stdout] ... [INFO] [stdout] 96 | )) [INFO] [stdout] 97 ~ }; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/parser.rs:89:9 [INFO] [stdout] | [INFO] [stdout] 89 | / if let $token_type = token { [INFO] [stdout] 90 | | $self.advance(); [INFO] [stdout] 91 | | Ok(line) [INFO] [stdout] 92 | | } else { [INFO] [stdout] ... | [INFO] [stdout] 96 | | )) [INFO] [stdout] 97 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] ... [INFO] [stdout] 249 | consume!(self, Token::Semicolon); [INFO] [stdout] | -------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `consume` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 89 ~ let _ = if let $token_type = token { [INFO] [stdout] 90 | $self.advance(); [INFO] [stdout] ... [INFO] [stdout] 96 | )) [INFO] [stdout] 97 ~ }; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/parser.rs:89:9 [INFO] [stdout] | [INFO] [stdout] 89 | / if let $token_type = token { [INFO] [stdout] 90 | | $self.advance(); [INFO] [stdout] 91 | | Ok(line) [INFO] [stdout] 92 | | } else { [INFO] [stdout] ... | [INFO] [stdout] 96 | | )) [INFO] [stdout] 97 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] ... [INFO] [stdout] 261 | consume!(self, Token::RightParen); [INFO] [stdout] | --------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `consume` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 89 ~ let _ = if let $token_type = token { [INFO] [stdout] 90 | $self.advance(); [INFO] [stdout] ... [INFO] [stdout] 96 | )) [INFO] [stdout] 97 ~ }; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/parser.rs:89:9 [INFO] [stdout] | [INFO] [stdout] 89 | / if let $token_type = token { [INFO] [stdout] 90 | | $self.advance(); [INFO] [stdout] 91 | | Ok(line) [INFO] [stdout] 92 | | } else { [INFO] [stdout] ... | [INFO] [stdout] 96 | | )) [INFO] [stdout] 97 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] ... [INFO] [stdout] 261 | consume!(self, Token::RightParen); [INFO] [stdout] | --------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `consume` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 89 ~ let _ = if let $token_type = token { [INFO] [stdout] 90 | $self.advance(); [INFO] [stdout] ... [INFO] [stdout] 96 | )) [INFO] [stdout] 97 ~ }; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.82s [INFO] running `Command { std: "docker" "inspect" "01d71e06eb42d368977e727b3cd0431f84d6a7893ed1d4abff2ff2dcd677e756", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "01d71e06eb42d368977e727b3cd0431f84d6a7893ed1d4abff2ff2dcd677e756", kill_on_drop: false }` [INFO] [stdout] 01d71e06eb42d368977e727b3cd0431f84d6a7893ed1d4abff2ff2dcd677e756