[INFO] fetching crate yaml-rust 0.4.5...
[INFO] checking yaml-rust-0.4.5 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate yaml-rust 0.4.5 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate yaml-rust 0.4.5 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yaml-rust 0.4.5
[INFO] finished tweaking crates.io crate yaml-rust 0.4.5
[INFO] tweaked toml for crates.io crate yaml-rust 0.4.5 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate yaml-rust 0.4.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0dcd8ab16fd20b76b53fa64f615d02e1086f65f11d75b705000ade62e66a8199
[INFO] running `Command { std: "docker" "start" "-a" "0dcd8ab16fd20b76b53fa64f615d02e1086f65f11d75b705000ade62e66a8199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0dcd8ab16fd20b76b53fa64f615d02e1086f65f11d75b705000ade62e66a8199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dcd8ab16fd20b76b53fa64f615d02e1086f65f11d75b705000ade62e66a8199", kill_on_drop: false }`
[INFO] [stdout] 0dcd8ab16fd20b76b53fa64f615d02e1086f65f11d75b705000ade62e66a8199
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4466e07f77fec31ca1ffb1ff8ba69aa49bf205bff86f052afcd0db524fe5c756
[INFO] running `Command { std: "docker" "start" "-a" "4466e07f77fec31ca1ffb1ff8ba69aa49bf205bff86f052afcd0db524fe5c756", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking yaml-rust v0.4.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/emitter.rs:368:30
[INFO] [stdout]     |
[INFO] [stdout] 368 |             Err(e) => panic!(format!("{}", 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]     = 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] 368 |             Err(e) => panic!("{}", e),
[INFO] [stdout]     |                             --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/emitter.rs:405:30
[INFO] [stdout]     |
[INFO] [stdout] 405 |             Err(e) => panic!(format!("{}", e)),
[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] 405 |             Err(e) => panic!("{}", e),
[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 11.33s
[INFO] running `Command { std: "docker" "inspect" "4466e07f77fec31ca1ffb1ff8ba69aa49bf205bff86f052afcd0db524fe5c756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4466e07f77fec31ca1ffb1ff8ba69aa49bf205bff86f052afcd0db524fe5c756", kill_on_drop: false }`
[INFO] [stdout] 4466e07f77fec31ca1ffb1ff8ba69aa49bf205bff86f052afcd0db524fe5c756