[INFO] cloning repository https://github.com/XavilPergis/testrepodontfork
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/XavilPergis/testrepodontfork" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXavilPergis%2Ftestrepodontfork", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXavilPergis%2Ftestrepodontfork'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 587c2efd7c9fc2737f43902cafbfce860227e7f0
[INFO] testing XavilPergis/testrepodontfork against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXavilPergis%2Ftestrepodontfork" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/XavilPergis/testrepodontfork 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 git repo https://github.com/XavilPergis/testrepodontfork
[INFO] finished tweaking git repo https://github.com/XavilPergis/testrepodontfork
[INFO] tweaked toml for git repo https://github.com/XavilPergis/testrepodontfork written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/XavilPergis/testrepodontfork 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 34186c600a1ffa27addcb7d011c5ab74b4c390dbd1b9be6bf641e22a38a3c33c
[INFO] running `Command { std: "docker" "start" "-a" "34186c600a1ffa27addcb7d011c5ab74b4c390dbd1b9be6bf641e22a38a3c33c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34186c600a1ffa27addcb7d011c5ab74b4c390dbd1b9be6bf641e22a38a3c33c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34186c600a1ffa27addcb7d011c5ab74b4c390dbd1b9be6bf641e22a38a3c33c", kill_on_drop: false }`
[INFO] [stdout] 34186c600a1ffa27addcb7d011c5ab74b4c390dbd1b9be6bf641e22a38a3c33c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] db2808defb3b7376f2a82cdb6386618f5ea7d49b4b23ac043819e23e0edea59b
[INFO] running `Command { std: "docker" "start" "-a" "db2808defb3b7376f2a82cdb6386618f5ea7d49b4b23ac043819e23e0edea59b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling futures-sink v0.3.17
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling signal-hook-mio v0.2.1
[INFO] [stderr]    Compiling crossterm v0.21.0
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling structopt v0.3.23
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling chatserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/client/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `terminal::ClearType`
[INFO] [stdout]  --> src/client/backend.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     terminal::ClearType,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Frame`
[INFO] [stdout]   --> src/client/backend.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 | use super::{ClientResult, Color, Frame, TerminalCell, TerminalEvent, TerminalPos, TerminalSize};
[INFO] [stdout]    |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/client/mod.rs:341:13
[INFO] [stdout]     |
[INFO] [stdout] 341 |         let mut current_base = self.computed_size.unwrap().height;
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `frame` as mutable more than once at a time
[INFO] [stdout]    --> src/client/mod.rs:355:13
[INFO] [stdout]     |
[INFO] [stdout] 340 |       fn render(&mut self, mut frame: Frame<'_>) {
[INFO] [stdout]     |                                             -- let's call this `'1`
[INFO] [stdout] ...
[INFO] [stdout] 355 |               frame.with_view(foo, move |frame2| {
[INFO] [stdout]     |               -^^^^
[INFO] [stdout]     |               |
[INFO] [stdout]     |  _____________`frame` was mutably borrowed here in the previous iteration of the loop
[INFO] [stdout]     | |
[INFO] [stdout] 356 | |                 child.render(frame2);
[INFO] [stdout] 357 | |             });
[INFO] [stdout]     | |______________- argument requires that `frame` is borrowed for `'1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chatserver` due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "db2808defb3b7376f2a82cdb6386618f5ea7d49b4b23ac043819e23e0edea59b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db2808defb3b7376f2a82cdb6386618f5ea7d49b4b23ac043819e23e0edea59b", kill_on_drop: false }`
[INFO] [stdout] db2808defb3b7376f2a82cdb6386618f5ea7d49b4b23ac043819e23e0edea59b