[INFO] cloning repository https://github.com/herbstlang/herbst
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/herbstlang/herbst" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fherbstlang%2Fherbst", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fherbstlang%2Fherbst'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ba0c07a4c55390c2402b83107c29ab0eab77fd0
[INFO] checking herbstlang/herbst against try#724e78794d2cf06eef820a24c9a4608d63435e1d for pr-149145
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fherbstlang%2Fherbst" "/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/herbstlang/herbst
[INFO] finished tweaking git repo https://github.com/herbstlang/herbst
[INFO] tweaked toml for git repo https://github.com/herbstlang/herbst written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/herbstlang/herbst on toolchain 724e78794d2cf06eef820a24c9a4608d63435e1d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/herbstlang/herbst 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" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "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 herbstlang/herbst against try#724e78794d2cf06eef820a24c9a4608d63435e1d for pr-149145
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fherbstlang%2Fherbst" "/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/herbstlang/herbst
[INFO] finished tweaking git repo https://github.com/herbstlang/herbst
[INFO] tweaked toml for git repo https://github.com/herbstlang/herbst written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/herbstlang/herbst on toolchain 724e78794d2cf06eef820a24c9a4608d63435e1d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/herbstlang/herbst 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" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11ca9d5ebed89e6464e253afa7aabc6f5edb45fbc2331c47f247a7fcee58666e
[INFO] running `Command { std: "docker" "start" "-a" "11ca9d5ebed89e6464e253afa7aabc6f5edb45fbc2331c47f247a7fcee58666e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11ca9d5ebed89e6464e253afa7aabc6f5edb45fbc2331c47f247a7fcee58666e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11ca9d5ebed89e6464e253afa7aabc6f5edb45fbc2331c47f247a7fcee58666e", kill_on_drop: false }`
[INFO] [stdout] 11ca9d5ebed89e6464e253afa7aabc6f5edb45fbc2331c47f247a7fcee58666e
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16d9291a4fccd9e015031c61f4067b13ce5058a1bf1ee23e71bc0ff305da2957
[INFO] running `Command { std: "docker" "start" "-a" "16d9291a4fccd9e015031c61f4067b13ce5058a1bf1ee23e71bc0ff305da2957", kill_on_drop: false }`
[INFO] [stderr]     Checking herbst v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         for i in 0..45 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         for i in 0..45 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `LAngleBracket`, `RAngleBracket`, `Char`, `Equals`, and `Arrow` are never constructed
[INFO] [stdout]   --> src/frontend/token.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout]  2 | pub enum TokenType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout]  7 |     LAngleBracket, RAngleBracket,
[INFO] [stdout]    |     ^^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     Comma, Integer, Double, String, Char,
[INFO] [stdout]    |                                     ^^^^
[INFO] [stdout] 11 |     Bang, BangEquals, Equals, PoundSign,
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 12 |     At, Arrow,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has derived impls for the traits `Debug` and `Clone`, but these are 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: methods `print` and `lex_error` are never used
[INFO] [stdout]   --> src/frontend/lexer.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Lexer {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn print(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn lex_error(&mut self, message: &str) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `op`, `children`, and `val` are never read
[INFO] [stdout]  --> src/frontend/ast.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Node {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 3 |     op: Op,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 4 |     children: Vec<Node>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     val: String
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `StrConcat` is never constructed
[INFO] [stdout]   --> src/frontend/ast.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub enum Op {
[INFO] [stdout]    |          -- variant in this enum
[INFO] [stdout] 39 |     Add, Sub, Mul, Div,
[INFO] [stdout] 40 |     Mod, StrConcat,
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Op` 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 variable: `i`
[INFO] [stdout]   --> src/main.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         for i in 0..45 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         for i in 0..45 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `LAngleBracket`, `RAngleBracket`, `Char`, `Equals`, and `Arrow` are never constructed
[INFO] [stdout]   --> src/frontend/token.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout]  2 | pub enum TokenType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout]  7 |     LAngleBracket, RAngleBracket,
[INFO] [stdout]    |     ^^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     Comma, Integer, Double, String, Char,
[INFO] [stdout]    |                                     ^^^^
[INFO] [stdout] 11 |     Bang, BangEquals, Equals, PoundSign,
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 12 |     At, Arrow,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has derived impls for the traits `Debug` and `Clone`, but these are 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: methods `print` and `lex_error` are never used
[INFO] [stdout]   --> src/frontend/lexer.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Lexer {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn print(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn lex_error(&mut self, message: &str) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `op`, `children`, and `val` are never read
[INFO] [stdout]  --> src/frontend/ast.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Node {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 3 |     op: Op,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 4 |     children: Vec<Node>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     val: String
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `StrConcat` is never constructed
[INFO] [stdout]   --> src/frontend/ast.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub enum Op {
[INFO] [stdout]    |          -- variant in this enum
[INFO] [stdout] 39 |     Add, Sub, Mul, Div,
[INFO] [stdout] 40 |     Mod, StrConcat,
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Op` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "16d9291a4fccd9e015031c61f4067b13ce5058a1bf1ee23e71bc0ff305da2957", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16d9291a4fccd9e015031c61f4067b13ce5058a1bf1ee23e71bc0ff305da2957", kill_on_drop: false }`
[INFO] [stdout] 16d9291a4fccd9e015031c61f4067b13ce5058a1bf1ee23e71bc0ff305da2957
