[INFO] cloning repository https://github.com/ashyanSpada/pratt_parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ashyanSpada/pratt_parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FashyanSpada%2Fpratt_parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FashyanSpada%2Fpratt_parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4811ee3ea1f92acf18b74e68f1a03310a0da1af0
[INFO] checking ashyanSpada/pratt_parser against master#368e2fd458a22d0cc133d0c254f2612ee999744f for pr-128351
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FashyanSpada%2Fpratt_parser" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ashyanSpada/pratt_parser on toolchain 368e2fd458a22d0cc133d0c254f2612ee999744f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ashyanSpada/pratt_parser
[INFO] finished tweaking git repo https://github.com/ashyanSpada/pratt_parser
[INFO] tweaked toml for git repo https://github.com/ashyanSpada/pratt_parser written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ashyanSpada/pratt_parser 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" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "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
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking ashyanSpada/pratt_parser against try#09146510cdb33d15474a35fde290187a88b1cf35 for pr-128351
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FashyanSpada%2Fpratt_parser" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ashyanSpada/pratt_parser on toolchain 09146510cdb33d15474a35fde290187a88b1cf35
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ashyanSpada/pratt_parser
[INFO] finished tweaking git repo https://github.com/ashyanSpada/pratt_parser
[INFO] tweaked toml for git repo https://github.com/ashyanSpada/pratt_parser written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ashyanSpada/pratt_parser 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" "+09146510cdb33d15474a35fde290187a88b1cf35" "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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f89c5f0f7f249b6694ff4d714d371927ef5d495bfbc6db719d183b5cbb0b0fb
[INFO] running `Command { std: "docker" "start" "-a" "1f89c5f0f7f249b6694ff4d714d371927ef5d495bfbc6db719d183b5cbb0b0fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f89c5f0f7f249b6694ff4d714d371927ef5d495bfbc6db719d183b5cbb0b0fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f89c5f0f7f249b6694ff4d714d371927ef5d495bfbc6db719d183b5cbb0b0fb", kill_on_drop: false }`
[INFO] [stdout] 1f89c5f0f7f249b6694ff4d714d371927ef5d495bfbc6db719d183b5cbb0b0fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d70ae5483e1b7f3999db7b23d096a2a8454f68ef51f7ee00545f46954ae907de
[INFO] running `Command { std: "docker" "start" "-a" "d70ae5483e1b7f3999db7b23d096a2a8454f68ef51f7ee00545f46954ae907de", kill_on_drop: false }`
[INFO] [stderr]     Checking pratt_parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/lexer.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |         op => None,
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]  --> src/lexer.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Token {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lexer` is never constructed
[INFO] [stdout]   --> src/lexer.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Lexer {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/lexer.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |         op => None,
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `next`, and `peek` are never used
[INFO] [stdout]   --> src/lexer.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Lexer {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 15 |     fn new(input: &str) -> Lexer {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn next(&mut self) -> Token {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     fn peek(&mut self) -> Token {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `S` is never used
[INFO] [stdout]   --> src/lexer.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum S {
[INFO] [stdout]    |      ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expr` is never used
[INFO] [stdout]   --> src/lexer.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn expr(input: &str) -> S {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expr_bp` is never used
[INFO] [stdout]   --> src/lexer.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn expr_bp(lexer: &mut Lexer, min_bp: u8) -> S {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `prefix_binding_power` is never used
[INFO] [stdout]    --> src/lexer.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn prefix_binding_power(op: char) -> ((), u8) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infix_binding_power` is never used
[INFO] [stdout]    --> src/lexer.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn infix_binding_power(op: char) -> Option<(u8, u8)> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `postfix_binding_power` is never used
[INFO] [stdout]    --> src/lexer.rs:138:4
[INFO] [stdout]     |
[INFO] [stdout] 138 | fn postfix_binding_power(op: char) -> Option<(u8, ())> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "d70ae5483e1b7f3999db7b23d096a2a8454f68ef51f7ee00545f46954ae907de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d70ae5483e1b7f3999db7b23d096a2a8454f68ef51f7ee00545f46954ae907de", kill_on_drop: false }`
[INFO] [stdout] d70ae5483e1b7f3999db7b23d096a2a8454f68ef51f7ee00545f46954ae907de