[INFO] fetching crate gain-listener 0.2.0...
[INFO] checking gain-listener-0.2.0 against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] extracting crate gain-listener 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate gain-listener 0.2.0 on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gain-listener 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate gain-listener 0.2.0
[INFO] tweaked toml for crates.io crate gain-listener 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate gain-listener 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c53e4e1723442b924f9d1c31e23b1f4cb29b52fc2e0101918607553820fe6978
[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" "c53e4e1723442b924f9d1c31e23b1f4cb29b52fc2e0101918607553820fe6978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c53e4e1723442b924f9d1c31e23b1f4cb29b52fc2e0101918607553820fe6978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c53e4e1723442b924f9d1c31e23b1f4cb29b52fc2e0101918607553820fe6978", kill_on_drop: false }`
[INFO] [stdout] c53e4e1723442b924f9d1c31e23b1f4cb29b52fc2e0101918607553820fe6978
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a293bd3c24fcf30dd92f88c90ed8ea7cb0e2ef0e86c6ea5960d51ba14b889012
[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" "a293bd3c24fcf30dd92f88c90ed8ea7cb0e2ef0e86c6ea5960d51ba14b889012", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking futures-core v0.3.13
[INFO] [stderr]    Compiling httparse v1.3.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking futures-channel v0.3.13
[INFO] [stderr]     Checking flatbuffers v0.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking async-task v1.3.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking gain v0.4.0
[INFO] [stderr]     Checking gain-listener v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> examples/http.rs:47:25
[INFO] [stdout]    |
[INFO] [stdout] 47 |             _ => panic!(e),
[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] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 47 |             _ => panic!("{}", e),
[INFO] [stdout]    |                         ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 47 |             _ => std::panic::panic_any(e),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.10s
[INFO] running `Command { std: "docker" "inspect" "a293bd3c24fcf30dd92f88c90ed8ea7cb0e2ef0e86c6ea5960d51ba14b889012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a293bd3c24fcf30dd92f88c90ed8ea7cb0e2ef0e86c6ea5960d51ba14b889012", kill_on_drop: false }`
[INFO] [stdout] a293bd3c24fcf30dd92f88c90ed8ea7cb0e2ef0e86c6ea5960d51ba14b889012