[INFO] cloning repository https://github.com/George3d6/lib3d6
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/George3d6/lib3d6" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGeorge3d6%2Flib3d6", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGeorge3d6%2Flib3d6'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0adb0a5e6adc2496c6276a7198eafb94d3cb8e01
[INFO] testing George3d6/lib3d6 against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGeorge3d6%2Flib3d6" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/George3d6/lib3d6 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/George3d6/lib3d6
[INFO] finished tweaking git repo https://github.com/George3d6/lib3d6
[INFO] tweaked toml for git repo https://github.com/George3d6/lib3d6 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/George3d6/lib3d6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c16dd1db3839bfa6a54e01d0dab4c1c8f7a954be2361e93c43a9b02da86830d4
[INFO] running `Command { std: "docker" "start" "-a" "c16dd1db3839bfa6a54e01d0dab4c1c8f7a954be2361e93c43a9b02da86830d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c16dd1db3839bfa6a54e01d0dab4c1c8f7a954be2361e93c43a9b02da86830d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c16dd1db3839bfa6a54e01d0dab4c1c8f7a954be2361e93c43a9b02da86830d4", kill_on_drop: false }`
[INFO] [stdout] c16dd1db3839bfa6a54e01d0dab4c1c8f7a954be2361e93c43a9b02da86830d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c59f36134b00d3a2437e0d19d840d8ced75b2cd99d3c4430986165396f8cbc0e
[INFO] running `Command { std: "docker" "start" "-a" "c59f36134b00d3a2437e0d19d840d8ced75b2cd99d3c4430986165396f8cbc0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling lib3d6 v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `launch_tmux`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tmux::{launch_tmux};
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read_to_string` found for struct `File` in the current scope
[INFO] [stdout]    --> src/tmux/mod.rs:9:10
[INFO] [stdout]     |
[INFO] [stdout] 9   |     file.read_to_string(&mut random_name, 12);
[INFO] [stdout]     |          ^^^^^^^^^^^^^^ method not found in `File`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[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 `lib3d6` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "c59f36134b00d3a2437e0d19d840d8ced75b2cd99d3c4430986165396f8cbc0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c59f36134b00d3a2437e0d19d840d8ced75b2cd99d3c4430986165396f8cbc0e", kill_on_drop: false }`
[INFO] [stdout] c59f36134b00d3a2437e0d19d840d8ced75b2cd99d3c4430986165396f8cbc0e