[INFO] updating cached repository https://github.com/nirgal-soft/life-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f7c9d830e42aeb8da1780d75259a23b2f6e4e4b3
[INFO] testing nirgal-soft/life-rs against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnirgal-soft%2Flife-rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nirgal-soft/life-rs on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nirgal-soft/life-rs
[INFO] finished tweaking git repo https://github.com/nirgal-soft/life-rs
[INFO] tweaked toml for git repo https://github.com/nirgal-soft/life-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/nirgal-soft/life-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6133c8e40313be2db3999bc73c8bb2d23f7f10cda41098627edb14caeb37ac33
[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" "6133c8e40313be2db3999bc73c8bb2d23f7f10cda41098627edb14caeb37ac33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6133c8e40313be2db3999bc73c8bb2d23f7f10cda41098627edb14caeb37ac33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6133c8e40313be2db3999bc73c8bb2d23f7f10cda41098627edb14caeb37ac33", kill_on_drop: false }`
[INFO] [stdout] 6133c8e40313be2db3999bc73c8bb2d23f7f10cda41098627edb14caeb37ac33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42c1228705897a32ccab225f6613a50af67d247649a6d30381a9d27084b2286e
[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" "42c1228705897a32ccab225f6613a50af67d247649a6d30381a9d27084b2286e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.15
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling arc-swap v0.4.4
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling term_size v0.3.1
[INFO] [stderr]    Compiling signal-hook v0.1.13
[INFO] [stderr]    Compiling chrono v0.4.10
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling enum-map-derive v0.4.3
[INFO] [stderr]    Compiling enum-map v0.6.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]    Compiling const-random v0.1.8
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling ahash v0.2.18
[INFO] [stderr]    Compiling enumset_derive v0.4.4
[INFO] [stderr]    Compiling enumset v0.4.5
[INFO] [stderr]    Compiling cursive v0.14.0
[INFO] [stderr]    Compiling life-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Dialog`
[INFO] [stdout]  --> src/main.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use cursive::views::{Dialog, TextView};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `to_string` found for enum `std::option::Option<char>` in the current scope
[INFO] [stdout]    --> src/main.rs:13:53
[INFO] [stdout]     |
[INFO] [stdout] 13  |       siv.add_layer(TextView::new(char::from_u32(100).to_string()));
[INFO] [stdout]     |                                                       ^^^^^^^^^ method not found in `std::option::Option<char>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method `to_string` exists but the following trait bounds were not satisfied:
[INFO] [stdout]             `std::option::Option<char>: std::fmt::Display`
[INFO] [stdout]             which is required by `std::option::Option<char>: std::string::ToString`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `life-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "42c1228705897a32ccab225f6613a50af67d247649a6d30381a9d27084b2286e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c1228705897a32ccab225f6613a50af67d247649a6d30381a9d27084b2286e", kill_on_drop: false }`
[INFO] [stdout] 42c1228705897a32ccab225f6613a50af67d247649a6d30381a9d27084b2286e