[INFO] cloning repository https://github.com/gilesv/lox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gilesv/lox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilesv%2Flox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilesv%2Flox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cd2920bbf2c6f13b597b9f6917777eecb491f03e
[INFO] checking gilesv/lox against e3607d549209cc9fdfe7e907123b4185210e2c2b for pr-158915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilesv%2Flox" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gilesv/lox
[INFO] finished tweaking git repo https://github.com/gilesv/lox
[INFO] tweaked toml for git repo https://github.com/gilesv/lox written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gilesv/lox on toolchain e3607d549209cc9fdfe7e907123b4185210e2c2b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e3607d549209cc9fdfe7e907123b4185210e2c2b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gilesv/lox 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" "+e3607d549209cc9fdfe7e907123b4185210e2c2b" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking gilesv/lox against e3607d549209cc9fdfe7e907123b4185210e2c2b for pr-158915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilesv%2Flox" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gilesv/lox
[INFO] finished tweaking git repo https://github.com/gilesv/lox
[INFO] tweaked toml for git repo https://github.com/gilesv/lox written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gilesv/lox on toolchain e3607d549209cc9fdfe7e907123b4185210e2c2b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e3607d549209cc9fdfe7e907123b4185210e2c2b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gilesv/lox 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" "+e3607d549209cc9fdfe7e907123b4185210e2c2b" "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-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c82e143e70994c1d2b052cfe255793fc19f2c44acd1f39649c05d490636745e2
[INFO] running `Command { std: "docker" "start" "c82e143e70994c1d2b052cfe255793fc19f2c44acd1f39649c05d490636745e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c82e143e70994c1d2b052cfe255793fc19f2c44acd1f39649c05d490636745e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c82e143e70994c1d2b052cfe255793fc19f2c44acd1f39649c05d490636745e2" "/opt/rustwide/cargo-home/bin/cargo" "+e3607d549209cc9fdfe7e907123b4185210e2c2b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c82e143e70994c1d2b052cfe255793fc19f2c44acd1f39649c05d490636745e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c82e143e70994c1d2b052cfe255793fc19f2c44acd1f39649c05d490636745e2" "/opt/rustwide/cargo-home/bin/cargo" "+e3607d549209cc9fdfe7e907123b4185210e2c2b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:35:65
[INFO] [stdout]    |
[INFO] [stdout] 35 |         Err(why) => panic!("couldn't open {}: {}", display, why.description()),
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:42:65
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Err(why) => panic!("couldn't read {}: {}", display, why.description()),
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:35:65
[INFO] [stdout]    |
[INFO] [stdout] 35 |         Err(why) => panic!("couldn't open {}: {}", display, why.description()),
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:42:65
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Err(why) => panic!("couldn't read {}: {}", display, why.description()),
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/scanner.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | enum TokenType {                                   
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 31 |     Identifier, String, Number,
[INFO] [stdout]    |     ^^^^^^^^^^          ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     And,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 35 |     Class,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 36 |     Else,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 37 |     False,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 38 |     Fun,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 39 |     For,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 40 |     If,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 41 |     Nil,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 42 |     Or,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 43 |      
[INFO] [stdout] 44 |     Print, Return, Super, This, True, Var, While,    
[INFO] [stdout]    |     ^^^^^  ^^^^^^  ^^^^^  ^^^^  ^^^^  ^^^  ^^^^^
[INFO] [stdout] 45 |
[INFO] [stdout] 46 |     Eof
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]   --> src/scanner.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 53 |     line: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/scanner.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | enum TokenType {                                   
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 31 |     Identifier, String, Number,
[INFO] [stdout]    |     ^^^^^^^^^^          ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     And,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 35 |     Class,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 36 |     Else,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 37 |     False,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 38 |     Fun,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 39 |     For,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 40 |     If,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 41 |     Nil,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 42 |     Or,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 43 |      
[INFO] [stdout] 44 |     Print, Return, Super, This, True, Var, While,    
[INFO] [stdout]    |     ^^^^^  ^^^^^^  ^^^^^  ^^^^  ^^^^  ^^^  ^^^^^
[INFO] [stdout] 45 |
[INFO] [stdout] 46 |     Eof
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]   --> src/scanner.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 53 |     line: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             run(source);
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |             let _ = run(source);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             run(source);
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |             let _ = run(source);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "c82e143e70994c1d2b052cfe255793fc19f2c44acd1f39649c05d490636745e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c82e143e70994c1d2b052cfe255793fc19f2c44acd1f39649c05d490636745e2", kill_on_drop: false }`
[INFO] [stdout] c82e143e70994c1d2b052cfe255793fc19f2c44acd1f39649c05d490636745e2
