[INFO] cloning repository https://github.com/mpalmr/parsing-basics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mpalmr/parsing-basics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpalmr%2Fparsing-basics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpalmr%2Fparsing-basics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 22489d1301a6b407111f736ab39f5636818b2491
[INFO] checking mpalmr/parsing-basics against master#4b596bbd847672da87763b76171687d3544863c2 for pr-144544
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpalmr%2Fparsing-basics" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mpalmr/parsing-basics
[INFO] finished tweaking git repo https://github.com/mpalmr/parsing-basics
[INFO] tweaked toml for git repo https://github.com/mpalmr/parsing-basics written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mpalmr/parsing-basics on toolchain 4b596bbd847672da87763b76171687d3544863c2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4b596bbd847672da87763b76171687d3544863c2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mpalmr/parsing-basics 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" "+4b596bbd847672da87763b76171687d3544863c2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+4b596bbd847672da87763b76171687d3544863c2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5252b085d657a108112804303a408915977ac11581426340587b961117331970
[INFO] running `Command { std: "docker" "start" "-a" "5252b085d657a108112804303a408915977ac11581426340587b961117331970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5252b085d657a108112804303a408915977ac11581426340587b961117331970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5252b085d657a108112804303a408915977ac11581426340587b961117331970", kill_on_drop: false }`
[INFO] [stdout] 5252b085d657a108112804303a408915977ac11581426340587b961117331970
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+4b596bbd847672da87763b76171687d3544863c2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02b0214236e48d94b7f938efbb98fdd20671911224e86cb0b396d8265dd86caa
[INFO] running `Command { std: "docker" "start" "-a" "02b0214236e48d94b7f938efbb98fdd20671911224e86cb0b396d8265dd86caa", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking unindent v0.2.3
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking regex v1.10.5
[INFO] [stderr]     Checking parsing-basics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `postfix_binding_power` is never used
[INFO] [stdout]    --> src/parser/expressions.rs:144:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | trait Operator {
[INFO] [stdout]     |       -------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 144 |     fn postfix_binding_power(&self) -> Option<(u8, ())>;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `postfix_binding_power` is never used
[INFO] [stdout]    --> src/parser/expressions.rs:144:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | trait Operator {
[INFO] [stdout]     |       -------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 144 |     fn postfix_binding_power(&self) -> Option<(u8, ())>;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.84s
[INFO] running `Command { std: "docker" "inspect" "02b0214236e48d94b7f938efbb98fdd20671911224e86cb0b396d8265dd86caa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02b0214236e48d94b7f938efbb98fdd20671911224e86cb0b396d8265dd86caa", kill_on_drop: false }`
[INFO] [stdout] 02b0214236e48d94b7f938efbb98fdd20671911224e86cb0b396d8265dd86caa