[INFO] cloning repository https://github.com/StelarCF/slancf
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/StelarCF/slancf" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStelarCF%2Fslancf", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStelarCF%2Fslancf'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2832a239d91bf7ebb7caf74b3792c9c19308b03d
[INFO] checking StelarCF/slancf against beta-2020-07-24 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStelarCF%2Fslancf" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/StelarCF/slancf on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/StelarCF/slancf
[INFO] finished tweaking git repo https://github.com/StelarCF/slancf
[INFO] tweaked toml for git repo https://github.com/StelarCF/slancf written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/StelarCF/slancf already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50588cd05949022da2899440b7b963b0d9098aa548a833536c3d38845139a19a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "50588cd05949022da2899440b7b963b0d9098aa548a833536c3d38845139a19a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50588cd05949022da2899440b7b963b0d9098aa548a833536c3d38845139a19a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50588cd05949022da2899440b7b963b0d9098aa548a833536c3d38845139a19a", kill_on_drop: false }`
[INFO] [stdout] 50588cd05949022da2899440b7b963b0d9098aa548a833536c3d38845139a19a
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f23f0fe5f0917eff9caab03c90a07d74b185f7de146687105d564f995638c247
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f23f0fe5f0917eff9caab03c90a07d74b185f7de146687105d564f995638c247", kill_on_drop: false }`
[INFO] [stderr]     Checking slancf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/lexer.rs:59:37
[INFO] [stdout]    |
[INFO] [stdout] 59 |             res.push(Token::Literal(try!(parse_literal(crt_string.clone()))));
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/lexer.rs:93:48
[INFO] [stdout]    |
[INFO] [stdout] 93 |                     res.push(Token::Expression(try!(lex(crt_string.clone()))));
[INFO] [stdout]    |                                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lexer.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 try!(check_forming(&mut res, &mut crt_string, literal));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lexer.rs:117:17
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 try!(check_forming(&mut res, &mut crt_string, literal));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lexer.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 try!(check_forming(&mut res, &mut crt_string, literal));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lexer.rs:143:17
[INFO] [stdout]     |
[INFO] [stdout] 143 |                 try!(check_forming(&mut res, &mut crt_string, literal));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lexer.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |         try!(check_forming(&mut res, &mut crt_string, literal));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/parser.rs:53:41
[INFO] [stdout]    |
[INFO] [stdout] 53 | ...                   let value = try!(self.into_type(token.clone()));
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/parser.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         try!(self.parse(&expression));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/parser.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 48 | /         match first_token {
[INFO] [stdout] 49 | |             Token::Name(s) => {
[INFO] [stdout] 50 | |                 match s.as_ref() {
[INFO] [stdout] 51 | |                     "print" => { // print key word
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |             }
[INFO] [stdout] 80 | |         }
[INFO] [stdout]    | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 81 |           Ok(Type::Empty)
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/lexer.rs:59:37
[INFO] [stdout]    |
[INFO] [stdout] 59 |             res.push(Token::Literal(try!(parse_literal(crt_string.clone()))));
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/lexer.rs:93:48
[INFO] [stdout]    |
[INFO] [stdout] 93 |                     res.push(Token::Expression(try!(lex(crt_string.clone()))));
[INFO] [stdout]    |                                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lexer.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 try!(check_forming(&mut res, &mut crt_string, literal));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lexer.rs:117:17
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 try!(check_forming(&mut res, &mut crt_string, literal));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lexer.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 try!(check_forming(&mut res, &mut crt_string, literal));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lexer.rs:143:17
[INFO] [stdout]     |
[INFO] [stdout] 143 |                 try!(check_forming(&mut res, &mut crt_string, literal));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lexer.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |         try!(check_forming(&mut res, &mut crt_string, literal));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/parser.rs:53:41
[INFO] [stdout]    |
[INFO] [stdout] 53 | ...                   let value = try!(self.into_type(token.clone()));
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/parser.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         try!(self.parse(&expression));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/parser.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 48 | /         match first_token {
[INFO] [stdout] 49 | |             Token::Name(s) => {
[INFO] [stdout] 50 | |                 match s.as_ref() {
[INFO] [stdout] 51 | |                     "print" => { // print key word
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |             }
[INFO] [stdout] 80 | |         }
[INFO] [stdout]    | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 81 |           Ok(Type::Empty)
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "f23f0fe5f0917eff9caab03c90a07d74b185f7de146687105d564f995638c247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f23f0fe5f0917eff9caab03c90a07d74b185f7de146687105d564f995638c247", kill_on_drop: false }`
[INFO] [stdout] f23f0fe5f0917eff9caab03c90a07d74b185f7de146687105d564f995638c247
