[INFO] cloning repository https://github.com/cfsamson/examples-parsers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cfsamson/examples-parsers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfsamson%2Fexamples-parsers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfsamson%2Fexamples-parsers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e47801140f65a0b613c09dd8b2a6cd55ed3e51c8
[INFO] checking cfsamson/examples-parsers against try#2b39fe756f52bc2825bf5b2bfc385cab922dae10 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfsamson%2Fexamples-parsers" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cfsamson/examples-parsers
[INFO] finished tweaking git repo https://github.com/cfsamson/examples-parsers
[INFO] tweaked toml for git repo https://github.com/cfsamson/examples-parsers written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cfsamson/examples-parsers on toolchain 2b39fe756f52bc2825bf5b2bfc385cab922dae10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cfsamson/examples-parsers 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" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "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 cfsamson/examples-parsers against try#2b39fe756f52bc2825bf5b2bfc385cab922dae10 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfsamson%2Fexamples-parsers" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cfsamson/examples-parsers
[INFO] finished tweaking git repo https://github.com/cfsamson/examples-parsers
[INFO] tweaked toml for git repo https://github.com/cfsamson/examples-parsers written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cfsamson/examples-parsers on toolchain 2b39fe756f52bc2825bf5b2bfc385cab922dae10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cfsamson/examples-parsers 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" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking cfsamson/examples-parsers against try#2b39fe756f52bc2825bf5b2bfc385cab922dae10 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfsamson%2Fexamples-parsers" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cfsamson/examples-parsers
[INFO] finished tweaking git repo https://github.com/cfsamson/examples-parsers
[INFO] tweaked toml for git repo https://github.com/cfsamson/examples-parsers written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cfsamson/examples-parsers on toolchain 2b39fe756f52bc2825bf5b2bfc385cab922dae10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cfsamson/examples-parsers 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" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e92ca0caef5eca3f869e5abef0379e48d8523707f8989504d1a1d2ebfb9cf619
[INFO] running `Command { std: "docker" "start" "-a" "e92ca0caef5eca3f869e5abef0379e48d8523707f8989504d1a1d2ebfb9cf619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e92ca0caef5eca3f869e5abef0379e48d8523707f8989504d1a1d2ebfb9cf619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e92ca0caef5eca3f869e5abef0379e48d8523707f8989504d1a1d2ebfb9cf619", kill_on_drop: false }`
[INFO] [stdout] e92ca0caef5eca3f869e5abef0379e48d8523707f8989504d1a1d2ebfb9cf619
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf161b751a4704aaa1460d2102479fc0af025e97b367ed979a1c5fbd91aae5aa
[INFO] running `Command { std: "docker" "start" "-a" "bf161b751a4704aaa1460d2102479fc0af025e97b367ed979a1c5fbd91aae5aa", kill_on_drop: false }`
[INFO] [stderr]     Checking parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `test`
[INFO] [stdout]  --> src/recursive_ascent.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let test = "[1, [], 3]";
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_test`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test`
[INFO] [stdout]  --> src/recursive_ascent.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let test = "[1, [], 3]";
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_test`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/recursive_ascent.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn test() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lex` is never constructed
[INFO] [stdout]  --> src/recursive_ascent.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Lex {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `token` is never used
[INFO] [stdout]   --> src/recursive_ascent.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Lex {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] 11 |     fn token(&self) -> Token {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]   --> src/recursive_ascent.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum Token {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Value` is never constructed
[INFO] [stdout]   --> src/recursive_ascent.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Value(JsonValue);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Array` is never constructed
[INFO] [stdout]   --> src/recursive_ascent.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct Array(Vec<JsonValue>);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Elements` is never constructed
[INFO] [stdout]   --> src/recursive_ascent.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Elements(Vec<JsonValue>);
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `JsonValue` is never used
[INFO] [stdout]   --> src/recursive_ascent.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | enum JsonValue {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParseError` is never constructed
[INFO] [stdout]   --> src/recursive_ascent.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct ParseError;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/recursive_descent.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |     Number(f64),
[INFO] [stdout]     |     ------ ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AstKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 163 -     Number(f64),
[INFO] [stdout] 163 +     Number(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/recursive_descent.rs:164:14
[INFO] [stdout]     |
[INFO] [stdout] 164 |     Operator(String),
[INFO] [stdout]     |     -------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AstKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 164 -     Operator(String),
[INFO] [stdout] 164 +     Operator(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/recursive_ascent.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn test() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lex` is never constructed
[INFO] [stdout]  --> src/recursive_ascent.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Lex {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `token` is never used
[INFO] [stdout]   --> src/recursive_ascent.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Lex {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] 11 |     fn token(&self) -> Token {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]   --> src/recursive_ascent.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum Token {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Value` is never constructed
[INFO] [stdout]   --> src/recursive_ascent.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Value(JsonValue);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Array` is never constructed
[INFO] [stdout]   --> src/recursive_ascent.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct Array(Vec<JsonValue>);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Elements` is never constructed
[INFO] [stdout]   --> src/recursive_ascent.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Elements(Vec<JsonValue>);
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `JsonValue` is never used
[INFO] [stdout]   --> src/recursive_ascent.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | enum JsonValue {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParseError` is never constructed
[INFO] [stdout]   --> src/recursive_ascent.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct ParseError;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/recursive_descent.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |     Number(f64),
[INFO] [stdout]     |     ------ ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AstKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 163 -     Number(f64),
[INFO] [stdout] 163 +     Number(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/recursive_descent.rs:164:14
[INFO] [stdout]     |
[INFO] [stdout] 164 |     Operator(String),
[INFO] [stdout]     |     -------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AstKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 164 -     Operator(String),
[INFO] [stdout] 164 +     Operator(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "bf161b751a4704aaa1460d2102479fc0af025e97b367ed979a1c5fbd91aae5aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf161b751a4704aaa1460d2102479fc0af025e97b367ed979a1c5fbd91aae5aa", kill_on_drop: false }`
[INFO] [stdout] bf161b751a4704aaa1460d2102479fc0af025e97b367ed979a1c5fbd91aae5aa
