[INFO] cloning repository https://github.com/scole66/rust-e262
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/scole66/rust-e262" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscole66%2Frust-e262", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscole66%2Frust-e262'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d2822464250c239736b6793ef246221be3cf2604
[INFO] testing scole66/rust-e262 against 1.52.1 for beta-1.53-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscole66%2Frust-e262" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/scole66/rust-e262 on toolchain 1.52.1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/scole66/rust-e262
[INFO] finished tweaking git repo https://github.com/scole66/rust-e262
[INFO] tweaked toml for git repo https://github.com/scole66/rust-e262 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/scole66/rust-e262 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "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] 8fcce26b959880a765e89ea6a6827f5ba7527bac93f1b1dc433a8a4c9a484586
[INFO] running `Command { std: "docker" "start" "-a" "8fcce26b959880a765e89ea6a6827f5ba7527bac93f1b1dc433a8a4c9a484586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fcce26b959880a765e89ea6a6827f5ba7527bac93f1b1dc433a8a4c9a484586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fcce26b959880a765e89ea6a6827f5ba7527bac93f1b1dc433a8a4c9a484586", kill_on_drop: false }`
[INFO] [stdout] 8fcce26b959880a765e89ea6a6827f5ba7527bac93f1b1dc433a8a4c9a484586
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 073d2ec878f2c426e444d22262f6da2d6d7803543d68eb7604b3cf60641f27f1
[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" "073d2ec878f2c426e444d22262f6da2d6d7803543d68eb7604b3cf60641f27f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling ahash v0.4.7
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling ahash v0.7.2
[INFO] [stderr]    Compiling lasso v0.5.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling res v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stdout] error[E0658]: use of unstable library feature 'cmp_min_max_by'
[INFO] [stdout]    --> src/parser/mod.rs:252:48
[INFO] [stdout]     |
[INFO] [stdout] 252 |         self.or_else(|err1| f().map_err(|err2| cmp::max_by(err2, err1, ParseError::compare)))
[INFO] [stdout]     |                                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #64460 <https://github.com/rust-lang/rust/issues/64460> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'cmp_min_max_by'
[INFO] [stdout]    --> src/parser/async_arrow_function_definitions.rs:103:43
[INFO] [stdout]     |
[INFO] [stdout] 103 |             (Err(err1), Err(err2)) => Err(cmp::max_by(err2, err1, ParseError::compare)),
[INFO] [stdout]     |                                           ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #64460 <https://github.com/rust-lang/rust/issues/64460> for more information
[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 E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `res`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "073d2ec878f2c426e444d22262f6da2d6d7803543d68eb7604b3cf60641f27f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "073d2ec878f2c426e444d22262f6da2d6d7803543d68eb7604b3cf60641f27f1", kill_on_drop: false }`
[INFO] [stdout] 073d2ec878f2c426e444d22262f6da2d6d7803543d68eb7604b3cf60641f27f1