[INFO] fetching crate modtype 0.7.0...
[INFO] checking modtype-0.7.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate modtype 0.7.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate modtype 0.7.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate modtype 0.7.0
[INFO] finished tweaking crates.io crate modtype 0.7.0
[INFO] tweaked toml for crates.io crate modtype 0.7.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69e395ce6aa32edc2868803228dd61952a26e5a324c22d1ece2f51461500c82c
[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" "69e395ce6aa32edc2868803228dd61952a26e5a324c22d1ece2f51461500c82c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69e395ce6aa32edc2868803228dd61952a26e5a324c22d1ece2f51461500c82c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69e395ce6aa32edc2868803228dd61952a26e5a324c22d1ece2f51461500c82c", kill_on_drop: false }`
[INFO] [stdout] 69e395ce6aa32edc2868803228dd61952a26e5a324c22d1ece2f51461500c82c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 81e3bacc9c2893f8fbc36afea5134adb47da19f5dc3eeb13232558b4b5b8f0f6
[INFO] running `Command { std: "docker" "start" "-a" "81e3bacc9c2893f8fbc36afea5134adb47da19f5dc3eeb13232558b4b5b8f0f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling if_chain v1.0.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling modtype_derive v0.7.0
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking num-iter v0.1.42
[INFO] [stderr]     Checking once_cell v0.2.4
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking modtype v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/lib.rs:1699:16
[INFO] [stdout]      |
[INFO] [stdout] 1699 |         panic!(msg);
[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] 1699 |         panic!("{}", msg);
[INFO] [stdout]      |                ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]      |
[INFO] [stdout] 1699 |         std::panic::panic_any(msg);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/lib.rs:1699:16
[INFO] [stdout]      |
[INFO] [stdout] 1699 |         panic!(msg);
[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] 1699 |         panic!("{}", msg);
[INFO] [stdout]      |                ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]      |
[INFO] [stdout] 1699 |         std::panic::panic_any(msg);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.46s
[INFO] running `Command { std: "docker" "inspect" "81e3bacc9c2893f8fbc36afea5134adb47da19f5dc3eeb13232558b4b5b8f0f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81e3bacc9c2893f8fbc36afea5134adb47da19f5dc3eeb13232558b4b5b8f0f6", kill_on_drop: false }`
[INFO] [stdout] 81e3bacc9c2893f8fbc36afea5134adb47da19f5dc3eeb13232558b4b5b8f0f6
