[INFO] cloning repository https://github.com/jacoobes/math_eval
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jacoobes/math_eval" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjacoobes%2Fmath_eval", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjacoobes%2Fmath_eval'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 39c9ca44e366f421f4fdd2c21075c267a6d3cc89
[INFO] checking jacoobes/math_eval against master#52f3c71c8dc4aaed71e3035995fcbdd6d78c98c6 for pr-127907
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjacoobes%2Fmath_eval" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jacoobes/math_eval on toolchain 52f3c71c8dc4aaed71e3035995fcbdd6d78c98c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52f3c71c8dc4aaed71e3035995fcbdd6d78c98c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jacoobes/math_eval
[INFO] finished tweaking git repo https://github.com/jacoobes/math_eval
[INFO] tweaked toml for git repo https://github.com/jacoobes/math_eval written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jacoobes/math_eval 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" "+52f3c71c8dc4aaed71e3035995fcbdd6d78c98c6" "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
[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 jacoobes/math_eval against try#6223d840318ac1f9c8b6bf3aef24c3ff67683479 for pr-127907
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjacoobes%2Fmath_eval" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jacoobes/math_eval on toolchain 6223d840318ac1f9c8b6bf3aef24c3ff67683479
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6223d840318ac1f9c8b6bf3aef24c3ff67683479" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jacoobes/math_eval
[INFO] finished tweaking git repo https://github.com/jacoobes/math_eval
[INFO] tweaked toml for git repo https://github.com/jacoobes/math_eval written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jacoobes/math_eval 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" "+6223d840318ac1f9c8b6bf3aef24c3ff67683479" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking jacoobes/math_eval against try#6223d840318ac1f9c8b6bf3aef24c3ff67683479 for pr-127907
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjacoobes%2Fmath_eval" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jacoobes/math_eval on toolchain 6223d840318ac1f9c8b6bf3aef24c3ff67683479
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6223d840318ac1f9c8b6bf3aef24c3ff67683479" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jacoobes/math_eval
[INFO] finished tweaking git repo https://github.com/jacoobes/math_eval
[INFO] tweaked toml for git repo https://github.com/jacoobes/math_eval written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jacoobes/math_eval 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" "+6223d840318ac1f9c8b6bf3aef24c3ff67683479" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded peekmore v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+6223d840318ac1f9c8b6bf3aef24c3ff67683479" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87aca6baeb7e849aed296aead267fbbea64d329730f3a78fdd7bcc8b1d6e4758
[INFO] running `Command { std: "docker" "start" "-a" "87aca6baeb7e849aed296aead267fbbea64d329730f3a78fdd7bcc8b1d6e4758", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87aca6baeb7e849aed296aead267fbbea64d329730f3a78fdd7bcc8b1d6e4758", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87aca6baeb7e849aed296aead267fbbea64d329730f3a78fdd7bcc8b1d6e4758", kill_on_drop: false }`
[INFO] [stdout] 87aca6baeb7e849aed296aead267fbbea64d329730f3a78fdd7bcc8b1d6e4758
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+6223d840318ac1f9c8b6bf3aef24c3ff67683479" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42a9d01be393886c93c6bfd2c741383ea06ad134b16d09d853661e913757e1d8
[INFO] running `Command { std: "docker" "start" "-a" "42a9d01be393886c93c6bfd2c741383ea06ad134b16d09d853661e913757e1d8", kill_on_drop: false }`
[INFO] [stderr]     Checking peekmore v1.0.0
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking math_eval v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/panicker/parse_error.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::tokenizer::tokens::{Token, TokenType};
[INFO] [stdout]   |                                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/panicker/parse_error.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::tokenizer::tokens::{Token, TokenType};
[INFO] [stdout]   |                                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::write`
[INFO] [stdout]  --> src/parser/expr/binary.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `format` and `write`
[INFO] [stdout]  --> src/parser/expr/grouping.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{format, write};
[INFO] [stdout]   |                ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PeekMoreIterator` and `PeekMore`
[INFO] [stdout]  --> src/parser/parser.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use peekmore::{PeekMore, PeekMoreIterator};
[INFO] [stdout]   |                ^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::panicker::lex_error::LexErr`
[INFO] [stdout]  --> src/parser/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::panicker::lex_error::LexErr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/parser/parser.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::vec::{self, IntoIter};
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PeekMoreIterator` and `PeekMore`
[INFO] [stdout]  --> src/tokenizer/tokenizer.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use peekmore::{PeekMore, PeekMoreIterator};
[INFO] [stdout]   |                ^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::write`
[INFO] [stdout]  --> src/parser/expr/binary.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `format` and `write`
[INFO] [stdout]  --> src/parser/expr/grouping.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{format, write};
[INFO] [stdout]   |                ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PeekMoreIterator` and `PeekMore`
[INFO] [stdout]  --> src/parser/parser.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use peekmore::{PeekMore, PeekMoreIterator};
[INFO] [stdout]   |                ^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::panicker::lex_error::LexErr`
[INFO] [stdout]  --> src/parser/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::panicker::lex_error::LexErr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/parser/parser.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::vec::{self, IntoIter};
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PeekMoreIterator` and `PeekMore`
[INFO] [stdout]  --> src/tokenizer/tokenizer.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use peekmore::{PeekMore, PeekMoreIterator};
[INFO] [stdout]   |                ^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sign` and `value` are never read
[INFO] [stdout]  --> src/parser/expr/unary.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Unary {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 7 |     sign: Token,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     value: Box<dyn Expr>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Unary` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sign` and `value` are never read
[INFO] [stdout]  --> src/parser/expr/unary.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Unary {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 7 |     sign: Token,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     value: Box<dyn Expr>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Unary` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "42a9d01be393886c93c6bfd2c741383ea06ad134b16d09d853661e913757e1d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42a9d01be393886c93c6bfd2c741383ea06ad134b16d09d853661e913757e1d8", kill_on_drop: false }`
[INFO] [stdout] 42a9d01be393886c93c6bfd2c741383ea06ad134b16d09d853661e913757e1d8