[INFO] fetching crate tuifw-screen-ncurses 0.8.1...
[INFO] testing tuifw-screen-ncurses-0.8.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate tuifw-screen-ncurses 0.8.1 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate tuifw-screen-ncurses 0.8.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tuifw-screen-ncurses 0.8.1
[INFO] finished tweaking crates.io crate tuifw-screen-ncurses 0.8.1
[INFO] tweaked toml for crates.io crate tuifw-screen-ncurses 0.8.1 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9453da33b2591ebdf42019a2c4db3065ecb73dc78c0f608068c03db8bc7187eb
[INFO] running `Command { std: "docker" "start" "-a" "9453da33b2591ebdf42019a2c4db3065ecb73dc78c0f608068c03db8bc7187eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9453da33b2591ebdf42019a2c4db3065ecb73dc78c0f608068c03db8bc7187eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9453da33b2591ebdf42019a2c4db3065ecb73dc78c0f608068c03db8bc7187eb", kill_on_drop: false }`
[INFO] [stdout] 9453da33b2591ebdf42019a2c4db3065ecb73dc78c0f608068c03db8bc7187eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0d1af544c6939d06f015cc7e952ebb32ffe0a50d2820ecdf8ff8898bfba9b56
[INFO] running `Command { std: "docker" "start" "-a" "e0d1af544c6939d06f015cc7e952ebb32ffe0a50d2820ecdf8ff8898bfba9b56", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling enum-derive-2018 v1.0.2
[INFO] [stderr]    Compiling macro-attr-2018 v1.1.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling tuifw-screen-ncurses v0.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> build.rs:31:74
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut c_file = File::create(&c_file).unwrap_or_else(|_| panic!(format!("cannot create {}", c_file_display)));
[INFO] [stdout]    |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> build.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` implied by `#[warn(warnings)]`
[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] 31 |         let mut c_file = File::create(&c_file).unwrap_or_else(|_| panic!("cannot create {}", c_file_display));
[INFO] [stdout]    |                                                                         --                                --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> build.rs:47:32
[INFO] [stdout]    |
[INFO] [stdout] 47 | "##).unwrap_or_else(|_| panic!(format!("cannot write {}", c_file_display)));
[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] 47 | "##).unwrap_or_else(|_| panic!("cannot write {}", c_file_display));
[INFO] [stdout]    |                               --                               --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> build.rs:57:36
[INFO] [stdout]    |
[INFO] [stdout] 57 |         .unwrap_or_else(|_| panic!(format!("cannot compile {}", c_file.display())));
[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] 57 |         .unwrap_or_else(|_| panic!("cannot compile {}", c_file.display()));
[INFO] [stdout]    |                                   --                                   --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> build.rs:62:36
[INFO] [stdout]    |
[INFO] [stdout] 62 |         .unwrap_or_else(|_| panic!(format!("cannot create {}", rs_file.display())));
[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] 62 |         .unwrap_or_else(|_| panic!("cannot create {}", rs_file.display()));
[INFO] [stdout]    |                                   --                                   --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> build.rs:64:36
[INFO] [stdout]    |
[INFO] [stdout] 64 |         .unwrap_or_else(|_| panic!(format!("{} failed", bin_file.display())));
[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] 64 |         .unwrap_or_else(|_| panic!("{} failed", bin_file.display()));
[INFO] [stdout]    |                                   --                             --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tuifw-screen-base v0.8.1
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tuifw-screen-base-0.8.1/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tuifw-screen-base-0.8.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tuifw-screen-base-0.8.1/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_panic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tuifw-screen-base-0.8.1/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(stmt_expr_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tuifw-screen-base`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e0d1af544c6939d06f015cc7e952ebb32ffe0a50d2820ecdf8ff8898bfba9b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0d1af544c6939d06f015cc7e952ebb32ffe0a50d2820ecdf8ff8898bfba9b56", kill_on_drop: false }`
[INFO] [stdout] e0d1af544c6939d06f015cc7e952ebb32ffe0a50d2820ecdf8ff8898bfba9b56
