[INFO] cloning repository https://github.com/ensconced/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/ensconced/pratt-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fensconced%2Fpratt-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fensconced%2Fpratt-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 73f5ad6e372b6ebea8114102b138aab1d03591a1
[INFO] checking ensconced/pratt-parser against master#f9515fdd5aa132e27d9b580a35b27f4b453251c1 for pr-125923
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fensconced%2Fpratt-parser" "/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/ensconced/pratt-parser on toolchain f9515fdd5aa132e27d9b580a35b27f4b453251c1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9515fdd5aa132e27d9b580a35b27f4b453251c1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ensconced/pratt-parser
[INFO] finished tweaking git repo https://github.com/ensconced/pratt-parser
[INFO] tweaked toml for git repo https://github.com/ensconced/pratt-parser written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ensconced/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" "+f9515fdd5aa132e27d9b580a35b27f4b453251c1" "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 ensconced/pratt-parser against try#71235522a9cf955f6b7ff56c0bfb2651ecd0180b for pr-125923
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fensconced%2Fpratt-parser" "/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/ensconced/pratt-parser on toolchain 71235522a9cf955f6b7ff56c0bfb2651ecd0180b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+71235522a9cf955f6b7ff56c0bfb2651ecd0180b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ensconced/pratt-parser
[INFO] finished tweaking git repo https://github.com/ensconced/pratt-parser
[INFO] tweaked toml for git repo https://github.com/ensconced/pratt-parser written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ensconced/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" "+71235522a9cf955f6b7ff56c0bfb2651ecd0180b" "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-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" "+71235522a9cf955f6b7ff56c0bfb2651ecd0180b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10e7a2232192aef0dcdcb20770d906305cb7a25d35a7f8ced9b10d90a7d6619b
[INFO] running `Command { std: "docker" "start" "-a" "10e7a2232192aef0dcdcb20770d906305cb7a25d35a7f8ced9b10d90a7d6619b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10e7a2232192aef0dcdcb20770d906305cb7a25d35a7f8ced9b10d90a7d6619b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10e7a2232192aef0dcdcb20770d906305cb7a25d35a7f8ced9b10d90a7d6619b", kill_on_drop: false }`
[INFO] [stdout] 10e7a2232192aef0dcdcb20770d906305cb7a25d35a7f8ced9b10d90a7d6619b
[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" "+71235522a9cf955f6b7ff56c0bfb2651ecd0180b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe843a49f5e0ec9bde55931b692f5a6cd0263aa676a0b12a16c783649fdd29bb
[INFO] running `Command { std: "docker" "start" "-a" "fe843a49f5e0ec9bde55931b692f5a6cd0263aa676a0b12a16c783649fdd29bb", kill_on_drop: false }`
[INFO] [stderr]     Checking pratt-parsing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/lexer.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn main() {}
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expr` is never used
[INFO] [stdout]  --> src/parser.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn expr(input: &str) -> S {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expr_bp` is never used
[INFO] [stdout]   --> src/parser.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | 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/parser.rs:74:4
[INFO] [stdout]    |
[INFO] [stdout] 74 | 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/parser.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | 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/parser.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn postfix_binding_power(op: char) -> Option<(u8, ())> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Atom` and `Cons` are never constructed
[INFO] [stdout]  --> src/s_expression.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum S {
[INFO] [stdout]   |          - variants in this enum
[INFO] [stdout] 4 |     Atom(char),
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     Cons(char, Vec<S>),
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/lexer.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn main() {}
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "fe843a49f5e0ec9bde55931b692f5a6cd0263aa676a0b12a16c783649fdd29bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe843a49f5e0ec9bde55931b692f5a6cd0263aa676a0b12a16c783649fdd29bb", kill_on_drop: false }`
[INFO] [stdout] fe843a49f5e0ec9bde55931b692f5a6cd0263aa676a0b12a16c783649fdd29bb