[INFO] cloning repository https://github.com/jcklie/wukong
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jcklie/wukong" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcklie%2Fwukong", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcklie%2Fwukong'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd319e7208b075529fb68375432ffb0941a7cf96
[INFO] testing jcklie/wukong against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcklie%2Fwukong" "/workspace/builds/worker-53/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-53/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jcklie/wukong on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jcklie/wukong
[INFO] finished tweaking git repo https://github.com/jcklie/wukong
[INFO] tweaked toml for git repo https://github.com/jcklie/wukong written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] crate git repo https://github.com/jcklie/wukong already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a751a7090ba72a578b4375429f64a9ab4144c24f91b53a7172ee7813045742e1
[INFO] running `Command { std: "docker" "start" "-a" "a751a7090ba72a578b4375429f64a9ab4144c24f91b53a7172ee7813045742e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a751a7090ba72a578b4375429f64a9ab4144c24f91b53a7172ee7813045742e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a751a7090ba72a578b4375429f64a9ab4144c24f91b53a7172ee7813045742e1", kill_on_drop: false }`
[INFO] [stdout] a751a7090ba72a578b4375429f64a9ab4144c24f91b53a7172ee7813045742e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0a508d5ca4b61ec9cdf8fe16d5723133e365787a3dbf9271df9e81d7ff57bb4
[INFO] running `Command { std: "docker" "start" "-a" "d0a508d5ca4b61ec9cdf8fe16d5723133e365787a3dbf9271df9e81d7ff57bb4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling wukong v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/lexer.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::token::{self, Token};
[INFO] [stdout]   |                          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Lexer`
[INFO] [stdout]  --> src/lexer.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Lexer {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lexer.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn new<S: AsRef<str>>(input: S) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_char`
[INFO] [stdout]   --> src/lexer.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn read_char(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_token`
[INFO] [stdout]   --> src/lexer.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn next_token(&mut self) -> Option<token::Token> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ILLEGAL`
[INFO] [stdout]  --> src/token.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     ILLEGAL,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `EOF`
[INFO] [stdout]  --> src/token.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     EOF,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IDENT`
[INFO] [stdout]  --> src/token.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     IDENT,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `INT`
[INFO] [stdout]  --> src/token.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     INT,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ASSIGN`
[INFO] [stdout]   --> src/token.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     ASSIGN,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PLUS`
[INFO] [stdout]   --> src/token.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     PLUS,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `COMMA`
[INFO] [stdout]   --> src/token.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     COMMA,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SEMICOLON`
[INFO] [stdout]   --> src/token.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     SEMICOLON,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LPAREN`
[INFO] [stdout]   --> src/token.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     LPAREN,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RPAREN`
[INFO] [stdout]   --> src/token.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     RPAREN,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LBRACE`
[INFO] [stdout]   --> src/token.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     LBRACE,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RBRACE`
[INFO] [stdout]   --> src/token.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     RBRACE,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FUNCTION`
[INFO] [stdout]   --> src/token.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     FUNCTION,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LET`
[INFO] [stdout]   --> src/token.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     LET,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.25s
[INFO] running `Command { std: "docker" "inspect" "d0a508d5ca4b61ec9cdf8fe16d5723133e365787a3dbf9271df9e81d7ff57bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0a508d5ca4b61ec9cdf8fe16d5723133e365787a3dbf9271df9e81d7ff57bb4", kill_on_drop: false }`
[INFO] [stdout] d0a508d5ca4b61ec9cdf8fe16d5723133e365787a3dbf9271df9e81d7ff57bb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d334d661d1d936709389c75fb92ec97666ea38e8620bb685cef4f6f60af300d
[INFO] running `Command { std: "docker" "start" "-a" "2d334d661d1d936709389c75fb92ec97666ea38e8620bb685cef4f6f60af300d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling test-case v1.2.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling wukong v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/lexer.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::token::{self, Token};
[INFO] [stdout]   |                          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ILLEGAL`
[INFO] [stdout]  --> src/token.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     ILLEGAL,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `EOF`
[INFO] [stdout]  --> src/token.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     EOF,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IDENT`
[INFO] [stdout]  --> src/token.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     IDENT,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `INT`
[INFO] [stdout]  --> src/token.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     INT,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FUNCTION`
[INFO] [stdout]   --> src/token.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     FUNCTION,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LET`
[INFO] [stdout]   --> src/token.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     LET,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.54s
[INFO] running `Command { std: "docker" "inspect" "2d334d661d1d936709389c75fb92ec97666ea38e8620bb685cef4f6f60af300d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d334d661d1d936709389c75fb92ec97666ea38e8620bb685cef4f6f60af300d", kill_on_drop: false }`
[INFO] [stdout] 2d334d661d1d936709389c75fb92ec97666ea38e8620bb685cef4f6f60af300d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7da01e2eb9c28eba53bf020435933f66069a8daa07dfb37145d2370fe8b1effa
[INFO] running `Command { std: "docker" "start" "-a" "7da01e2eb9c28eba53bf020435933f66069a8daa07dfb37145d2370fe8b1effa", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/lexer.rs:1:26
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::token::{self, Token};
[INFO] [stderr]   |                          ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ILLEGAL`
[INFO] [stderr]  --> src/token.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     ILLEGAL,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `EOF`
[INFO] [stderr]  --> src/token.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     EOF,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `IDENT`
[INFO] [stderr]  --> src/token.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     IDENT,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `INT`
[INFO] [stderr]  --> src/token.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     INT,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FUNCTION`
[INFO] [stderr]   --> src/token.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     FUNCTION,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LET`
[INFO] [stderr]   --> src/token.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     LET,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `wukong` (bin "wukong" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/wukong-d7b4df5d4843b4b8)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test lexer::tests::test_next_token ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7da01e2eb9c28eba53bf020435933f66069a8daa07dfb37145d2370fe8b1effa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7da01e2eb9c28eba53bf020435933f66069a8daa07dfb37145d2370fe8b1effa", kill_on_drop: false }`
[INFO] [stdout] 7da01e2eb9c28eba53bf020435933f66069a8daa07dfb37145d2370fe8b1effa