[INFO] fetching crate chess_perft 3.1.1...
[INFO] checking chess_perft-3.1.1 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate chess_perft 3.1.1 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate chess_perft 3.1.1 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] removed /workspace/builds/worker-11/source/.cargo/config
[INFO] started tweaking crates.io crate chess_perft 3.1.1
[INFO] finished tweaking crates.io crate chess_perft 3.1.1
[INFO] tweaked toml for crates.io crate chess_perft 3.1.1 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate chess_perft 3.1.1 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 autocfg v0.1.1
[INFO] [stderr]   Downloaded rand v0.4.2
[INFO] [stderr]   Downloaded num-traits v0.2.4
[INFO] [stderr]   Downloaded shakmaty v0.15.0
[INFO] [stderr]   Downloaded btoi v0.4.0
[INFO] [stderr]   Downloaded chess v3.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stdout] 4f5657308b46b85548383cd681a48d0bc7835834372eabafe65b240c9a356d84
[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" "4f5657308b46b85548383cd681a48d0bc7835834372eabafe65b240c9a356d84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f5657308b46b85548383cd681a48d0bc7835834372eabafe65b240c9a356d84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f5657308b46b85548383cd681a48d0bc7835834372eabafe65b240c9a356d84", kill_on_drop: false }`
[INFO] [stdout] 4f5657308b46b85548383cd681a48d0bc7835834372eabafe65b240c9a356d84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stdout] 070551d61283e92a64f8bea656628016ffcad1686772b16fab0b7ec8443440fb
[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" "070551d61283e92a64f8bea656628016ffcad1686772b16fab0b7ec8443440fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking rustc-demangle v0.1.14
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling shakmaty v0.15.0
[INFO] [stderr]     Checking getopts v0.2.19
[INFO] [stderr]    Compiling backtrace v0.3.26
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]     Checking btoi v0.4.0
[INFO] [stderr]    Compiling chess v3.1.1
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking chess_perft v3.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:35:26
[INFO] [stdout]    |
[INFO] [stdout] 35 |         Err(f) => panic!(f.to_string()),
[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] 35 |         Err(f) => panic!("{}", f.to_string()),
[INFO] [stdout]    |                          ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 35 |         Err(f) => std::panic::panic_any(f.to_string()),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:35:26
[INFO] [stdout]    |
[INFO] [stdout] 35 |         Err(f) => panic!(f.to_string()),
[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] 35 |         Err(f) => panic!("{}", f.to_string()),
[INFO] [stdout]    |                          ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 35 |         Err(f) => std::panic::panic_any(f.to_string()),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 2m 52s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "070551d61283e92a64f8bea656628016ffcad1686772b16fab0b7ec8443440fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "070551d61283e92a64f8bea656628016ffcad1686772b16fab0b7ec8443440fb", kill_on_drop: false }`
[INFO] [stdout] 070551d61283e92a64f8bea656628016ffcad1686772b16fab0b7ec8443440fb