[INFO] fetching crate warn 0.2.2...
[INFO] checking warn-0.2.2 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate warn 0.2.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate warn 0.2.2 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate warn 0.2.2
[INFO] finished tweaking crates.io crate warn 0.2.2
[INFO] tweaked toml for crates.io crate warn 0.2.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 655d55bf0b7967e119516c9a08a48aa263c9f1ac55b5663bddd7a7b419a3868d
[INFO] running `Command { std: "docker" "start" "-a" "655d55bf0b7967e119516c9a08a48aa263c9f1ac55b5663bddd7a7b419a3868d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "655d55bf0b7967e119516c9a08a48aa263c9f1ac55b5663bddd7a7b419a3868d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "655d55bf0b7967e119516c9a08a48aa263c9f1ac55b5663bddd7a7b419a3868d", kill_on_drop: false }`
[INFO] [stdout] 655d55bf0b7967e119516c9a08a48aa263c9f1ac55b5663bddd7a7b419a3868d
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea4f2761a2f09fc2c4792e682370a872bae7c6140046d35a661a0e9aa1fe5b3c
[INFO] running `Command { std: "docker" "start" "-a" "ea4f2761a2f09fc2c4792e682370a872bae7c6140046d35a661a0e9aa1fe5b3c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking warn v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:146:40
[INFO] [stdout]     |
[INFO] [stdout] 146 |         super::closure(&mut |_| panic!(WARNING2)).warn(WARNING);
[INFO] [stdout]     |                                        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 146 |         super::closure(&mut |_| panic!("{}", WARNING2)).warn(WARNING);
[INFO] [stdout]     |                                        ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 146 |         super::closure(&mut |_| std::panic::panic_any(WARNING2)).warn(WARNING);
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:151:41
[INFO] [stdout]     |
[INFO] [stdout] 151 |         super::closure(&mut |()| panic!(WARNING2));
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 151 |         super::closure(&mut |()| panic!("{}", WARNING2));
[INFO] [stdout]     |                                         ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 151 |         super::closure(&mut |()| std::panic::panic_any(WARNING2));
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "ea4f2761a2f09fc2c4792e682370a872bae7c6140046d35a661a0e9aa1fe5b3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea4f2761a2f09fc2c4792e682370a872bae7c6140046d35a661a0e9aa1fe5b3c", kill_on_drop: false }`
[INFO] [stdout] ea4f2761a2f09fc2c4792e682370a872bae7c6140046d35a661a0e9aa1fe5b3c