[INFO] cloning repository https://github.com/mookid/diffr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mookid/diffr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmookid%2Fdiffr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmookid%2Fdiffr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ccaf42985421635acd74e9824fb5daab4e8b0ca6
[INFO] checking mookid/diffr against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmookid%2Fdiffr" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mookid/diffr on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mookid/diffr
[INFO] finished tweaking git repo https://github.com/mookid/diffr
[INFO] tweaked toml for git repo https://github.com/mookid/diffr written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/mookid/diffr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa067074a485c2b38f7015e5d60c839a587f21e33504dc983d4213572a60724d
[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" "aa067074a485c2b38f7015e5d60c839a587f21e33504dc983d4213572a60724d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa067074a485c2b38f7015e5d60c839a587f21e33504dc983d4213572a60724d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa067074a485c2b38f7015e5d60c839a587f21e33504dc983d4213572a60724d", kill_on_drop: false }`
[INFO] [stdout] aa067074a485c2b38f7015e5d60c839a587f21e33504dc983d4213572a60724d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fefffc1e5a1fbcd29a070cb9ffb90fd867256c49d19c027d03f8684ea36cfe3
[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" "3fefffc1e5a1fbcd29a070cb9ffb90fd867256c49d19c027d03f8684ea36cfe3", kill_on_drop: false }`
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking diffr v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/tests_cli.rs:91:6
[INFO] [stdout]    |
[INFO] [stdout] 91 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/tests_cli.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 | /                 format!(
[INFO] [stdout] 26 | |                     "{}: expected empty, got\n\n{}",
[INFO] [stdout] 27 | |                     quote_or_empty(prefix),
[INFO] [stdout] 28 | |                     quote_or_empty(actual)
[INFO] [stdout] 29 | |                 )
[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] 25 |                 
[INFO] [stdout] 26 |                     "{}: expected empty, got\n\n{}",
[INFO] [stdout] 27 |                     quote_or_empty(prefix),
[INFO] [stdout] 28 |                     quote_or_empty(actual)
[INFO] [stdout] 29 |                 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/tests_cli.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 | /                 format!(
[INFO] [stdout] 34 | |                     "{}: expected at least\n\n{}\n\ngot\n\n{}",
[INFO] [stdout] 35 | |                     prefix,
[INFO] [stdout] 36 | |                     quote_or_empty(exp),
[INFO] [stdout] 37 | |                     quote_or_empty(actual)
[INFO] [stdout] 38 | |                 )
[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] 33 |                 
[INFO] [stdout] 34 |                     "{}: expected at least\n\n{}\n\ngot\n\n{}",
[INFO] [stdout] 35 |                     prefix,
[INFO] [stdout] 36 |                     quote_or_empty(exp),
[INFO] [stdout] 37 |                     quote_or_empty(actual)
[INFO] [stdout] 38 |                 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/tests_cli.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 | /                 format!(
[INFO] [stdout] 43 | |                     "{}: expected\n\n{}\n\ngot\n\n{}",
[INFO] [stdout] 44 | |                     prefix,
[INFO] [stdout] 45 | |                     quote_or_empty(exp),
[INFO] [stdout] 46 | |                     quote_or_empty(actual)
[INFO] [stdout] 47 | |                 )
[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] 42 |                 
[INFO] [stdout] 43 |                     "{}: expected\n\n{}\n\ngot\n\n{}",
[INFO] [stdout] 44 |                     prefix,
[INFO] [stdout] 45 |                     quote_or_empty(exp),
[INFO] [stdout] 46 |                     quote_or_empty(actual)
[INFO] [stdout] 47 |                 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/tests_cli.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 | /         format!(
[INFO] [stdout] 95 | |             "unexpected status: expected {} got {}",
[INFO] [stdout] 96 | |             string_of_status(descr.is_success),
[INFO] [stdout] 97 | |             string_of_status(output.status.success()),
[INFO] [stdout] 98 | |         )
[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] 94 |         
[INFO] [stdout] 95 |             "unexpected status: expected {} got {}",
[INFO] [stdout] 96 |             string_of_status(descr.is_success),
[INFO] [stdout] 97 |             string_of_status(output.status.success()),
[INFO] [stdout] 98 |         
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "3fefffc1e5a1fbcd29a070cb9ffb90fd867256c49d19c027d03f8684ea36cfe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fefffc1e5a1fbcd29a070cb9ffb90fd867256c49d19c027d03f8684ea36cfe3", kill_on_drop: false }`
[INFO] [stdout] 3fefffc1e5a1fbcd29a070cb9ffb90fd867256c49d19c027d03f8684ea36cfe3