[INFO] fetching crate muncher 0.6.1...
[INFO] testing muncher-0.6.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate muncher 0.6.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate muncher 0.6.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate muncher 0.6.1
[INFO] finished tweaking crates.io crate muncher 0.6.1
[INFO] tweaked toml for crates.io crate muncher 0.6.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b743fbdb959425ba799d878d69f98a3f73fb4802e538187c5f9443881bbd2fa5
[INFO] running `Command { std: "docker" "start" "-a" "b743fbdb959425ba799d878d69f98a3f73fb4802e538187c5f9443881bbd2fa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b743fbdb959425ba799d878d69f98a3f73fb4802e538187c5f9443881bbd2fa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b743fbdb959425ba799d878d69f98a3f73fb4802e538187c5f9443881bbd2fa5", kill_on_drop: false }`
[INFO] [stdout] b743fbdb959425ba799d878d69f98a3f73fb4802e538187c5f9443881bbd2fa5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bb51e192e2000db1e6b2e3310439cae9dff1c60042bc74160513ab552caea89
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6bb51e192e2000db1e6b2e3310439cae9dff1c60042bc74160513ab552caea89", kill_on_drop: false }`
[INFO] [stderr]    Compiling muncher v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "6bb51e192e2000db1e6b2e3310439cae9dff1c60042bc74160513ab552caea89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bb51e192e2000db1e6b2e3310439cae9dff1c60042bc74160513ab552caea89", kill_on_drop: false }`
[INFO] [stdout] 6bb51e192e2000db1e6b2e3310439cae9dff1c60042bc74160513ab552caea89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f558fcfe405f34471881497a11663d3a85e629cc19881957559150052ad1e1f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7f558fcfe405f34471881497a11663d3a85e629cc19881957559150052ad1e1f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling muncher v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "7f558fcfe405f34471881497a11663d3a85e629cc19881957559150052ad1e1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f558fcfe405f34471881497a11663d3a85e629cc19881957559150052ad1e1f", kill_on_drop: false }`
[INFO] [stdout] 7f558fcfe405f34471881497a11663d3a85e629cc19881957559150052ad1e1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 16ca07147b7f7ad7313cc05abcc70d7da15f3e1c20e22ef66bc34eb6c91032a3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "16ca07147b7f7ad7313cc05abcc70d7da15f3e1c20e22ef66bc34eb6c91032a3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/muncher-75bb549e810e053a
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test muncher::tests::advance_muncher ... ok
[INFO] [stdout] test muncher::tests::bounds_error_this_panics_if_bounds_wrong ... ok
[INFO] [stdout] test muncher::tests::test_eat_eol ... ok
[INFO] [stdout] test muncher::tests::test_stack_code ... ok
[INFO] [stdout] test muncher::tests::peek_count ... ok
[INFO] [stdout] test muncher::tests::test_stack_math ... ok
[INFO] [stderr]    Doc-tests muncher
[INFO] [stdout] test muncher::tests::peek_range_of ... ok
[INFO] [stdout] test muncher::tests::seek_muncher ... ok
[INFO] [stdout] test muncher::tests::peek_muncher ... ok
[INFO] [stdout] test muncher::tests::end_eat_while_muncher ... ok
[INFO] [stdout] test muncher::tests::test_fork ... ok
[INFO] [stdout] test muncher::tests::test_stack_fail ... ok
[INFO] [stdout] test muncher::tests::test_position ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::peek_until_count (line 309) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::eat_range_of (line 661) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::fork (line 174) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::peek_until (line 278) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::cursor_position (line 226) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::new (line 155) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] test src/lib.rs - (line 35) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::seek (line 360) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::brace_stack (line 197) ... ok
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::eat_until_count (line 630) ... ok
[INFO] [stdout] test src/lib.rs - (line 49) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::eat_until (line 593) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::eat (line 380) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Muncher::peek_range_of (line 339) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Stack::is_matched (line 94) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Stack::eat (line 47) ... ok
[INFO] [stdout] test src/muncher.rs - muncher::Stack::new (line 29) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.72s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "16ca07147b7f7ad7313cc05abcc70d7da15f3e1c20e22ef66bc34eb6c91032a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16ca07147b7f7ad7313cc05abcc70d7da15f3e1c20e22ef66bc34eb6c91032a3", kill_on_drop: false }`
[INFO] [stdout] 16ca07147b7f7ad7313cc05abcc70d7da15f3e1c20e22ef66bc34eb6c91032a3