[INFO] fetching crate rlcount 0.2.1...
[INFO] testing rlcount-0.2.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate rlcount 0.2.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate rlcount 0.2.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rlcount 0.2.1
[INFO] finished tweaking crates.io crate rlcount 0.2.1
[INFO] tweaked toml for crates.io crate rlcount 0.2.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate rlcount 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 421bd72c71d79da57a1d3d8adb3baf2619fba65671c163674f017a06f89b1882
[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" "421bd72c71d79da57a1d3d8adb3baf2619fba65671c163674f017a06f89b1882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "421bd72c71d79da57a1d3d8adb3baf2619fba65671c163674f017a06f89b1882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "421bd72c71d79da57a1d3d8adb3baf2619fba65671c163674f017a06f89b1882", kill_on_drop: false }`
[INFO] [stdout] 421bd72c71d79da57a1d3d8adb3baf2619fba65671c163674f017a06f89b1882
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", 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] da2c57e7fdb5a73ca3866ab5cea1c0f61c422e19afcd38ac5921204cce5a67bd
[INFO] running `Command { std: "docker" "start" "-a" "da2c57e7fdb5a73ca3866ab5cea1c0f61c422e19afcd38ac5921204cce5a67bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.90
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling rlcount v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.08s
[INFO] running `Command { std: "docker" "inspect" "da2c57e7fdb5a73ca3866ab5cea1c0f61c422e19afcd38ac5921204cce5a67bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da2c57e7fdb5a73ca3866ab5cea1c0f61c422e19afcd38ac5921204cce5a67bd", kill_on_drop: false }`
[INFO] [stdout] da2c57e7fdb5a73ca3866ab5cea1c0f61c422e19afcd38ac5921204cce5a67bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", 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] ae661c3f65a5093886b175c061681cffbc4df17cf7fc71dccbc17e6b94f2357e
[INFO] running `Command { std: "docker" "start" "-a" "ae661c3f65a5093886b175c061681cffbc4df17cf7fc71dccbc17e6b94f2357e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rlcount v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/parser.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 | /                 &"// aaa\n// aaa\n// aaa\n/*\naaa\naaa\naaa\n*/\nHi"
[INFO] [stdout] 113 | |                     .to_string(),
[INFO] [stdout]     | |________________________________^ expected struct `String`, found `&String`
[INFO] [stdout]     |
[INFO] [stdout] help: consider removing the borrow
[INFO] [stdout]     |
[INFO] [stdout] 112 |                 "// aaa\n// aaa\n// aaa\n/*\naaa\naaa\naaa\n*/\nHi"
[INFO] [stdout] 113 |                     .to_string(),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/parser.rs:124:17
[INFO] [stdout]     |
[INFO] [stdout] 124 | /                 &r#"# Hello
[INFO] [stdout] 125 | | """" 
[INFO] [stdout] 126 | | Multiline
[INFO] [stdout] 127 | | Comment
[INFO] [stdout] 128 | | """"
[INFO] [stdout] 129 | | print("Hello")"#
[INFO] [stdout] 130 | |                     .to_string(),
[INFO] [stdout]     | |________________________________^ expected struct `String`, found `&String`
[INFO] [stdout]     |
[INFO] [stdout] help: consider removing the borrow
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 r#"# Hello
[INFO] [stdout] 125 | """" 
[INFO] [stdout] 126 | Multiline
[INFO] [stdout] 127 | Comment
[INFO] [stdout] 128 | """"
[INFO] [stdout] 129 | print("Hello")"#
[INFO] [stdout]   ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rlcount` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "ae661c3f65a5093886b175c061681cffbc4df17cf7fc71dccbc17e6b94f2357e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae661c3f65a5093886b175c061681cffbc4df17cf7fc71dccbc17e6b94f2357e", kill_on_drop: false }`
[INFO] [stdout] ae661c3f65a5093886b175c061681cffbc4df17cf7fc71dccbc17e6b94f2357e