[INFO] updating cached repository https://github.com/gress2/rlox [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 8e91c50472d7252645658823a1068b3dad2adb8e [INFO] checking gress2/rlox against beta-2019-10-27 for pr-65897 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgress2%2Frlox" "/workspace/builds/worker-5/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/gress2/rlox on toolchain beta-2019-10-27 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/gress2/rlox [INFO] finished tweaking git repo https://github.com/gress2/rlox [INFO] tweaked toml for git repo https://github.com/gress2/rlox written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/gress2/rlox already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 4538937a69c30970be4a30dd47b33f8a45e1c35b740d472a209ef6c91c3a92b6 [INFO] running `"docker" "start" "-a" "4538937a69c30970be4a30dd47b33f8a45e1c35b740d472a209ef6c91c3a92b6"` [INFO] [stderr] Checking rlox v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] error[E0502]: cannot borrow `*char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:141:11 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 141 | match char_iter.next() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 231 | None => return tokenize(TokenType::Eof) [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:154:38 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 154 | if next_matches('=', &mut char_iter) { [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 157 | return tokenize(TokenType::Bang); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:161:38 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 161 | if next_matches('=', &mut char_iter) { [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 164 | return tokenize(TokenType::Equal); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:168:38 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 168 | if next_matches('=', &mut char_iter) { [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 171 | return tokenize(TokenType::Less); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:175:38 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 175 | if next_matches('=', &mut char_iter) { [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 178 | return tokenize(TokenType::Greater); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:182:38 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 182 | if next_matches('/', &mut char_iter) { [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 186 | return tokenize(TokenType::Slash); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:183:37 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 183 | consume_comment(&mut char_iter, &mut line); [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] 184 | return tokenize(TokenType::Null); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `line` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:183:53 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | ---- first borrow occurs due to use of `line` in closure [INFO] [stderr] ... [INFO] [stderr] 183 | consume_comment(&mut char_iter, &mut line); [INFO] [stderr] | ^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] 184 | return tokenize(TokenType::Null); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0506]: cannot assign to `*line` because it is borrowed [INFO] [stderr] --> src/scanner.rs:193:17 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- borrow of `*line` occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | ---- borrow occurs due to use in closure [INFO] [stderr] ... [INFO] [stderr] 193 | *line += 1; [INFO] [stderr] | ^^^^^^^^^^ assignment to borrowed `*line` occurs here [INFO] [stderr] 194 | return tokenize(TokenType::Null); [INFO] [stderr] | -------- borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:205:56 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 205 | let s : String = get_identifier(c, &mut char_iter); [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 208 | "and" => return tokenize(TokenType::And), [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error: aborting due to 10 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0502, E0506. [INFO] [stderr] For more information about an error, try `rustc --explain E0502`. [INFO] [stderr] error: could not compile `rlox`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error[E0502]: cannot borrow `*char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:141:11 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 141 | match char_iter.next() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 231 | None => return tokenize(TokenType::Eof) [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:154:38 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 154 | if next_matches('=', &mut char_iter) { [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 157 | return tokenize(TokenType::Bang); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:161:38 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 161 | if next_matches('=', &mut char_iter) { [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 164 | return tokenize(TokenType::Equal); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:168:38 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 168 | if next_matches('=', &mut char_iter) { [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 171 | return tokenize(TokenType::Less); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:175:38 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 175 | if next_matches('=', &mut char_iter) { [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 178 | return tokenize(TokenType::Greater); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:182:38 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 182 | if next_matches('/', &mut char_iter) { [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 186 | return tokenize(TokenType::Slash); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:183:37 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 183 | consume_comment(&mut char_iter, &mut line); [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] 184 | return tokenize(TokenType::Null); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `line` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:183:53 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | ---- first borrow occurs due to use of `line` in closure [INFO] [stderr] ... [INFO] [stderr] 183 | consume_comment(&mut char_iter, &mut line); [INFO] [stderr] | ^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] 184 | return tokenize(TokenType::Null); [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0506]: cannot assign to `*line` because it is borrowed [INFO] [stderr] --> src/scanner.rs:193:17 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- borrow of `*line` occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | ---- borrow occurs due to use in closure [INFO] [stderr] ... [INFO] [stderr] 193 | *line += 1; [INFO] [stderr] | ^^^^^^^^^^ assignment to borrowed `*line` occurs here [INFO] [stderr] 194 | return tokenize(TokenType::Null); [INFO] [stderr] | -------- borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `char_iter` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/scanner.rs:205:56 [INFO] [stderr] | [INFO] [stderr] 137 | let tokenize = | ty: TokenType | -> Token { [INFO] [stderr] | -------------------------- immutable borrow occurs here [INFO] [stderr] 138 | build_token(ty, &line, &start_iter, &char_iter) [INFO] [stderr] | --------- first borrow occurs due to use of `char_iter` in closure [INFO] [stderr] ... [INFO] [stderr] 205 | let s : String = get_identifier(c, &mut char_iter); [INFO] [stderr] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 208 | "and" => return tokenize(TokenType::And), [INFO] [stderr] | -------- immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error: aborting due to 10 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0502, E0506. [INFO] [stderr] For more information about an error, try `rustc --explain E0502`. [INFO] [stderr] error: could not compile `rlox`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "4538937a69c30970be4a30dd47b33f8a45e1c35b740d472a209ef6c91c3a92b6"` [INFO] running `"docker" "rm" "-f" "4538937a69c30970be4a30dd47b33f8a45e1c35b740d472a209ef6c91c3a92b6"` [INFO] [stdout] 4538937a69c30970be4a30dd47b33f8a45e1c35b740d472a209ef6c91c3a92b6