[INFO] cloning repository https://github.com/onetesseract/lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/onetesseract/lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fonetesseract%2Flang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fonetesseract%2Flang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d162825c468006750b0245cf86114cd1bd8811d
[INFO] checking onetesseract/lang against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fonetesseract%2Flang" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/onetesseract/lang on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/onetesseract/lang
[INFO] finished tweaking git repo https://github.com/onetesseract/lang
[INFO] tweaked toml for git repo https://github.com/onetesseract/lang written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/onetesseract/lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7673617aa65aa249c10a007fed8b3db7f7d88ce3ecdf72ec7a3202da7a7eb06
[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" "c7673617aa65aa249c10a007fed8b3db7f7d88ce3ecdf72ec7a3202da7a7eb06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7673617aa65aa249c10a007fed8b3db7f7d88ce3ecdf72ec7a3202da7a7eb06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7673617aa65aa249c10a007fed8b3db7f7d88ce3ecdf72ec7a3202da7a7eb06", kill_on_drop: false }`
[INFO] [stdout] c7673617aa65aa249c10a007fed8b3db7f7d88ce3ecdf72ec7a3202da7a7eb06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 598f29fafe996cbec25dd7769303b6b421d1ae9eb9773d1db8700ef22f2e37b8
[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" "598f29fafe996cbec25dd7769303b6b421d1ae9eb9773d1db8700ef22f2e37b8", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/char_stream.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     panic!();
[INFO] [stdout]    |     --------- any code following this expression is unreachable
[INFO] [stdout] 26 |     std::process::exit(1);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/char_stream.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     panic!();
[INFO] [stdout]    |     --------- any code following this expression is unreachable
[INFO] [stdout] 26 |     std::process::exit(1);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/parser.rs:228:13
[INFO] [stdout]     |
[INFO] [stdout] 227 |             panic!();
[INFO] [stdout]     |             --------- any code following this expression is unreachable
[INFO] [stdout] 228 |             return Token::Error
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/tokenizer.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             end = true;
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `expect`
[INFO] [stdout]   --> src/parser.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn expect(x: Token, y: Token, cs: &mut CharStream) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_dec`
[INFO] [stdout]   --> src/parser.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn parse_dec(cs: &mut CharStream) -> Token {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/parser.rs:228:13
[INFO] [stdout]     |
[INFO] [stdout] 227 |             panic!();
[INFO] [stdout]     |             --------- any code following this expression is unreachable
[INFO] [stdout] 228 |             return Token::Error
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/tokenizer.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             end = true;
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `expect`
[INFO] [stdout]   --> src/parser.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn expect(x: Token, y: Token, cs: &mut CharStream) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_dec`
[INFO] [stdout]   --> src/parser.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn parse_dec(cs: &mut CharStream) -> Token {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "598f29fafe996cbec25dd7769303b6b421d1ae9eb9773d1db8700ef22f2e37b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "598f29fafe996cbec25dd7769303b6b421d1ae9eb9773d1db8700ef22f2e37b8", kill_on_drop: false }`
[INFO] [stdout] 598f29fafe996cbec25dd7769303b6b421d1ae9eb9773d1db8700ef22f2e37b8