[INFO] cloning repository https://github.com/daa84/neovim-lib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daa84/neovim-lib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaa84%2Fneovim-lib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaa84%2Fneovim-lib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5291bf754bcfa55dcf6332808f72d09ebd78ce90
[INFO] checking daa84/neovim-lib against master#f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 for pr-83312
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaa84%2Fneovim-lib" "/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/daa84/neovim-lib on toolchain f5f33ec0e0455eefa72fc5567eb1280a4d5ee206
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/daa84/neovim-lib
[INFO] finished tweaking git repo https://github.com/daa84/neovim-lib
[INFO] tweaked toml for git repo https://github.com/daa84/neovim-lib written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d24a64279c7f346d171b73ff9f764fa03dbe04fb853647dd7ddd2839ac0a9a5c
[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" "d24a64279c7f346d171b73ff9f764fa03dbe04fb853647dd7ddd2839ac0a9a5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d24a64279c7f346d171b73ff9f764fa03dbe04fb853647dd7ddd2839ac0a9a5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d24a64279c7f346d171b73ff9f764fa03dbe04fb853647dd7ddd2839ac0a9a5c", kill_on_drop: false }`
[INFO] [stdout] d24a64279c7f346d171b73ff9f764fa03dbe04fb853647dd7ddd2839ac0a9a5c
[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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 067ecf1931773618fe665443936ec061a0f6dbf3ec11100c2e6532e1a0fb8a53
[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" "067ecf1931773618fe665443936ec061a0f6dbf3ec11100c2e6532e1a0fb8a53", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking unix_socket v0.5.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking rmp v0.8.10
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking rmpv v0.4.7
[INFO] [stderr]     Checking neovim-lib v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/lib.rs:79:24
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 panic!(format!("neovim socket not found at '{:?}'", &socket_path));
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 panic!("neovim socket not found at '{:?}'", &socket_path);
[INFO] [stdout]    |                       --                                               --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/lib.rs:101:24
[INFO] [stdout]     |
[INFO] [stdout] 101 |                   panic!(format!(
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 102 | |                     "Server name does not match socket path! {} != {}",
[INFO] [stdout] 103 | |                     name,
[INFO] [stdout] 104 | |                     socket_path.to_str().unwrap()
[INFO] [stdout] 105 | |                 ));
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 101 |                 panic!(
[INFO] [stdout] 102 |                     "Server name does not match socket path! {} != {}",
[INFO] [stdout] 103 |                     name,
[INFO] [stdout] 104 |                     socket_path.to_str().unwrap()
[INFO] [stdout] 105 |                 );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/lib.rs:108:24
[INFO] [stdout]     |
[INFO] [stdout] 108 |           None => panic!(format!(
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 109 | |             "Server name does not match socket path! {:?} != {}",
[INFO] [stdout] 110 | |             servername,
[INFO] [stdout] 111 | |             socket_path.to_str().unwrap()
[INFO] [stdout] 112 | |         )),
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 108 |         None => panic!(
[INFO] [stdout] 109 |             "Server name does not match socket path! {:?} != {}",
[INFO] [stdout] 110 |             servername,
[INFO] [stdout] 111 |             socket_path.to_str().unwrap()
[INFO] [stdout] 112 |         ),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.08s
[INFO] running `Command { std: "docker" "inspect" "067ecf1931773618fe665443936ec061a0f6dbf3ec11100c2e6532e1a0fb8a53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "067ecf1931773618fe665443936ec061a0f6dbf3ec11100c2e6532e1a0fb8a53", kill_on_drop: false }`
[INFO] [stdout] 067ecf1931773618fe665443936ec061a0f6dbf3ec11100c2e6532e1a0fb8a53