[INFO] cloning repository https://github.com/evomassiny/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/evomassiny/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevomassiny%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevomassiny%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a196b86f50ef4d5e1f681e9d38875fc8ee9d8c65
[INFO] building evomassiny/rlox against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevomassiny%2Frlox" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/evomassiny/rlox on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/evomassiny/rlox
[INFO] finished tweaking git repo https://github.com/evomassiny/rlox
[INFO] tweaked toml for git repo https://github.com/evomassiny/rlox written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/evomassiny/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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf00797ac8b9c2685a48870279f6c9ccbc314d1d7ac061d3b8ec3c1c2cbfa29d
[INFO] running `Command { std: "docker" "start" "-a" "cf00797ac8b9c2685a48870279f6c9ccbc314d1d7ac061d3b8ec3c1c2cbfa29d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf00797ac8b9c2685a48870279f6c9ccbc314d1d7ac061d3b8ec3c1c2cbfa29d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf00797ac8b9c2685a48870279f6c9ccbc314d1d7ac061d3b8ec3c1c2cbfa29d", kill_on_drop: false }`
[INFO] [stdout] cf00797ac8b9c2685a48870279f6c9ccbc314d1d7ac061d3b8ec3c1c2cbfa29d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 023d19eb4680ac96253277fb7c3d14e4fbaeff0dcfb879f251b136d37d1bac97
[INFO] running `Command { std: "docker" "start" "-a" "023d19eb4680ac96253277fb7c3d14e4fbaeff0dcfb879f251b136d37d1bac97", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling lexer v0.1.0 (/opt/rustwide/workdir/lexer)
[INFO] [stderr]    Compiling os_str_bytes v6.3.0
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> parser/src/stmt_parser.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 100 |             TokenKind::For => {
[INFO] [stdout]     |             -------------- matches all the relevant values
[INFO] [stdout] ...
[INFO] [stdout] 104 |             TokenKind::For => {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stdout] warning: variant `Primary` is never constructed
[INFO] [stdout]   --> parser/src/expr_parser.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub enum Precedence {
[INFO] [stdout]    |          ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 37 |     Primary = 9,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Precedence` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.46/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clap_lex v0.2.4
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling resolver v0.1.0 (/opt/rustwide/workdir/resolver)
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SymbolId` and `Symbol`
[INFO] [stdout]  --> resolver/src/resolve.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::symbols::{Sym, Symbol, SymbolId, SymbolTable};
[INFO] [stdout]   |                           ^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NodeId`
[INFO] [stdout]  --> resolver/src/resolve.rs:4:30
[INFO] [stdout]   |
[INFO] [stdout] 4 | use parser::{Expr, ExprKind, NodeId, Stmt, StmtKind};
[INFO] [stdout]   |                              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `StorageKind`
[INFO] [stdout]  --> resolver/src/scopes.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::symbols::{StorageKind, Sym, SymbolId, SymbolTable};
[INFO] [stdout]   |                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Globals` and `ScopeChain`
[INFO] [stdout]  --> resolver/src/lib.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | use scopes::{Globals, ScopeChain};
[INFO] [stdout]   |              ^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> resolver/src/scopes.rs:56:39
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn resolve(&self, name: &str, table: &SymbolTable) -> Option<Sym> {
[INFO] [stdout]    |                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "023d19eb4680ac96253277fb7c3d14e4fbaeff0dcfb879f251b136d37d1bac97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "023d19eb4680ac96253277fb7c3d14e4fbaeff0dcfb879f251b136d37d1bac97", kill_on_drop: false }`
[INFO] [stdout] 023d19eb4680ac96253277fb7c3d14e4fbaeff0dcfb879f251b136d37d1bac97