[INFO] cloning repository https://github.com/shhhshank/Sip-It
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shhhshank/Sip-It" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshhhshank%2FSip-It", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshhhshank%2FSip-It'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 65005692488ca8ad3485aef43d6eefce6b97b16b
[INFO] checking shhhshank/Sip-It against master#982c6f8721416431ec62bb0b9105c0578a9fc603 for pr-129329
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshhhshank%2FSip-It" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shhhshank/Sip-It on toolchain 982c6f8721416431ec62bb0b9105c0578a9fc603
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+982c6f8721416431ec62bb0b9105c0578a9fc603" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shhhshank/Sip-It
[INFO] finished tweaking git repo https://github.com/shhhshank/Sip-It
[INFO] tweaked toml for git repo https://github.com/shhhshank/Sip-It written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/shhhshank/Sip-It 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" "+982c6f8721416431ec62bb0b9105c0578a9fc603" "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 shhhshank/Sip-It against try#fa63ef4ad80785c0f3f362275f3772bdc67c23e0 for pr-129329
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshhhshank%2FSip-It" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shhhshank/Sip-It on toolchain fa63ef4ad80785c0f3f362275f3772bdc67c23e0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shhhshank/Sip-It
[INFO] finished tweaking git repo https://github.com/shhhshank/Sip-It
[INFO] tweaked toml for git repo https://github.com/shhhshank/Sip-It written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/shhhshank/Sip-It 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" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "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 shhhshank/Sip-It against try#fa63ef4ad80785c0f3f362275f3772bdc67c23e0 for pr-129329
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshhhshank%2FSip-It" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shhhshank/Sip-It on toolchain fa63ef4ad80785c0f3f362275f3772bdc67c23e0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shhhshank/Sip-It
[INFO] finished tweaking git repo https://github.com/shhhshank/Sip-It
[INFO] tweaked toml for git repo https://github.com/shhhshank/Sip-It written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/shhhshank/Sip-It 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" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e3fda9e7914c768c9df07a2b516088347ba8cc54570e8c6ad7282e7ac994655
[INFO] running `Command { std: "docker" "start" "-a" "2e3fda9e7914c768c9df07a2b516088347ba8cc54570e8c6ad7282e7ac994655", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e3fda9e7914c768c9df07a2b516088347ba8cc54570e8c6ad7282e7ac994655", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e3fda9e7914c768c9df07a2b516088347ba8cc54570e8c6ad7282e7ac994655", kill_on_drop: false }`
[INFO] [stdout] 2e3fda9e7914c768c9df07a2b516088347ba8cc54570e8c6ad7282e7ac994655
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b576cd370cdad37b857b57afff35e918a257d6c5da474a036f74779c5ae725ab
[INFO] running `Command { std: "docker" "start" "-a" "b576cd370cdad37b857b57afff35e918a257d6c5da474a036f74779c5ae725ab", kill_on_drop: false }`
[INFO] [stderr]     Checking SipIt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/sip_it.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{self, write};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/sip_it.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{self, write};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/sip_it.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |             _ => write!(f, "UNKNOWN"),
[INFO] [stdout]    |             ^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout] note: these patterns collectively make the last one unreachable
[INFO] [stdout]   --> src/sip_it.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             TokenType::INT(int_val) => write!(f, "INT({})", int_val),
[INFO] [stdout]    |             ----------------------- matches some of the same values
[INFO] [stdout] 71 |             TokenType::FLOAT(float_val) => write!(f, "FLOAT({})", float_val),
[INFO] [stdout]    |             --------------------------- matches some of the same values
[INFO] [stdout] 72 |             TokenType::PLUS => write!(f, "PLUS"),
[INFO] [stdout]    |             --------------- matches some of the same values
[INFO] [stdout] 73 |             TokenType::MINUS => write!(f, "MINUS"),
[INFO] [stdout]    |             ---------------- matches some of the same values
[INFO] [stdout] 74 |             TokenType::MUL => write!(f, "MULTIPLY"),
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] 75 |             TokenType::DIV => write!(f, "DIVIDE"),
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] 76 |             TokenType::LPAREN => write!(f, "LEFT-PAREN"),
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 77 |             TokenType::RPAREN => write!(f, "RPAREN"),
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 78 |             _ => write!(f, "UNKNOWN"),
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/sip_it.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |             _ => write!(f, "UNKNOWN"),
[INFO] [stdout]    |             ^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout] note: these patterns collectively make the last one unreachable
[INFO] [stdout]   --> src/sip_it.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             TokenType::INT(int_val) => write!(f, "INT({})", int_val),
[INFO] [stdout]    |             ----------------------- matches some of the same values
[INFO] [stdout] 71 |             TokenType::FLOAT(float_val) => write!(f, "FLOAT({})", float_val),
[INFO] [stdout]    |             --------------------------- matches some of the same values
[INFO] [stdout] 72 |             TokenType::PLUS => write!(f, "PLUS"),
[INFO] [stdout]    |             --------------- matches some of the same values
[INFO] [stdout] 73 |             TokenType::MINUS => write!(f, "MINUS"),
[INFO] [stdout]    |             ---------------- matches some of the same values
[INFO] [stdout] 74 |             TokenType::MUL => write!(f, "MULTIPLY"),
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] 75 |             TokenType::DIV => write!(f, "DIVIDE"),
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] 76 |             TokenType::LPAREN => write!(f, "LEFT-PAREN"),
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 77 |             TokenType::RPAREN => write!(f, "RPAREN"),
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 78 |             _ => write!(f, "UNKNOWN"),
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fn_name` is never read
[INFO] [stdout]   --> src/sip_it.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct Lexer {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 85 |     fn_name: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pos_end` is never read
[INFO] [stdout]    --> src/sip_it.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 197 | pub struct Error {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pos_end: Position,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fn_name` is never read
[INFO] [stdout]   --> src/sip_it.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct Lexer {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 85 |     fn_name: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pos_end` is never read
[INFO] [stdout]    --> src/sip_it.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 197 | pub struct Error {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pos_end: Position,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "b576cd370cdad37b857b57afff35e918a257d6c5da474a036f74779c5ae725ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b576cd370cdad37b857b57afff35e918a257d6c5da474a036f74779c5ae725ab", kill_on_drop: false }`
[INFO] [stdout] b576cd370cdad37b857b57afff35e918a257d6c5da474a036f74779c5ae725ab