[INFO] fetching crate muncher 0.7.0...
[INFO] testing muncher-0.7.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate muncher 0.7.0 into /workspace/builds/worker-115/source
[INFO] validating manifest of crates.io crate muncher 0.7.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate muncher 0.7.0
[INFO] finished tweaking crates.io crate muncher 0.7.0
[INFO] tweaked toml for crates.io crate muncher 0.7.0 written to /workspace/builds/worker-115/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ca30577494fbf5082a1e7b0b76fe5ef4f1df4145994204ee5be278e8aa8c928
[INFO] running `Command { std: "docker" "start" "-a" "7ca30577494fbf5082a1e7b0b76fe5ef4f1df4145994204ee5be278e8aa8c928", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ca30577494fbf5082a1e7b0b76fe5ef4f1df4145994204ee5be278e8aa8c928", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ca30577494fbf5082a1e7b0b76fe5ef4f1df4145994204ee5be278e8aa8c928", kill_on_drop: false }`
[INFO] [stdout] 7ca30577494fbf5082a1e7b0b76fe5ef4f1df4145994204ee5be278e8aa8c928
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bc69b3e8f1ae1b2eb8134570242caccbc7a62e7c0bd5e1f60e9d45c8ad842aa
[INFO] running `Command { std: "docker" "start" "-a" "8bc69b3e8f1ae1b2eb8134570242caccbc7a62e7c0bd5e1f60e9d45c8ad842aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling muncher v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `input`
[INFO] [stdout]   --> src/muncher.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     input: &'a str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pos`
[INFO] [stdout]   --> src/muncher.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pos: (usize, usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "8bc69b3e8f1ae1b2eb8134570242caccbc7a62e7c0bd5e1f60e9d45c8ad842aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bc69b3e8f1ae1b2eb8134570242caccbc7a62e7c0bd5e1f60e9d45c8ad842aa", kill_on_drop: false }`
[INFO] [stdout] 8bc69b3e8f1ae1b2eb8134570242caccbc7a62e7c0bd5e1f60e9d45c8ad842aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df59fc43bc8f66edf4a53b6cb98b963a1704b2231ae136577eed9ee475494028
[INFO] running `Command { std: "docker" "start" "-a" "df59fc43bc8f66edf4a53b6cb98b963a1704b2231ae136577eed9ee475494028", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: field is never read: `input`
[INFO] [stdout]   --> src/muncher.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     input: &'a str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling muncher v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `pos`
[INFO] [stdout]   --> src/muncher.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pos: (usize, usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `input`
[INFO] [stdout]   --> src/muncher.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     input: &'a str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pos`
[INFO] [stdout]   --> src/muncher.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pos: (usize, usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "df59fc43bc8f66edf4a53b6cb98b963a1704b2231ae136577eed9ee475494028", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df59fc43bc8f66edf4a53b6cb98b963a1704b2231ae136577eed9ee475494028", kill_on_drop: false }`
[INFO] [stdout] df59fc43bc8f66edf4a53b6cb98b963a1704b2231ae136577eed9ee475494028
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9a2428c403e350dba3d4cd2d9f4676cc8cdf0666eb12ff587f73ba7e93bd2d3e
[INFO] running `Command { std: "docker" "start" "-a" "9a2428c403e350dba3d4cd2d9f4676cc8cdf0666eb12ff587f73ba7e93bd2d3e", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `input`
[INFO] [stderr]   --> src/muncher.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     input: &'a str,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `pos`
[INFO] [stderr]   --> src/muncher.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pos: (usize, usize),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `muncher` (lib) generated 2 warnings
[INFO] [stderr] warning: `muncher` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/muncher-8244a11917b00eaa)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test muncher::tests::advance_muncher ... ok
[INFO] [stdout] test muncher::tests::fork ... ok
[INFO] [stdout] test muncher::tests::peek_count ... ok
[INFO] [stdout] test muncher::tests::peek_count_codepoints ... ok
[INFO] [stdout] test muncher::tests::fork_codepoints ... ok
[INFO] [stdout] test muncher::tests::bounds_error_this_panics_if_bounds_wrong ... ok
[INFO] [stdout] test muncher::tests::eat_eol ... ok
[INFO] [stdout] test muncher::tests::end_eat_while_muncher ... ok
[INFO] [stdout] test muncher::tests::peek_muncher ... ok
[INFO] [stdout] test muncher::tests::peek_range_of ... ok
[INFO] [stdout] test muncher::tests::position ... ok
[INFO] [stdout] test muncher::tests::position_codepoints ... ok
[INFO] [stdout] test muncher::tests::seek_muncher_codepoints ... ok
[INFO] [stdout] test muncher::tests::seek_muncher ... ok
[INFO] [stdout] test muncher::tests::stack_code ... ok
[INFO] [stdout] test muncher::tests::stack_fail ... ok
[INFO] [stdout] test muncher::tests::stack_math ... ok
[INFO] [stdout] test muncher::tests::test_stack_code ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests muncher
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::brace_stack (line 193) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::new (line 153) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Stack::eat (line 41) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::fork (line 172) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::eat (line 390) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::peek_until_count (line 311) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Stack::is_matched (line 91) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::eat_range_of (line 551) ... ok
[INFO] [stdout] test src/lib.rs - (line 50) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::cursor_position (line 228) ... ok
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::eat_until_count (line 520) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::peek_range_of (line 343) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Stack::new (line 27) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::eat_until (line 489) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::seek (line 368) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::peek_until (line 280) ... ok
[INFO] [stdout] test src/lib.rs - (line 36) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.35s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9a2428c403e350dba3d4cd2d9f4676cc8cdf0666eb12ff587f73ba7e93bd2d3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a2428c403e350dba3d4cd2d9f4676cc8cdf0666eb12ff587f73ba7e93bd2d3e", kill_on_drop: false }`
[INFO] [stdout] 9a2428c403e350dba3d4cd2d9f4676cc8cdf0666eb12ff587f73ba7e93bd2d3e