[INFO] fetching crate quickcheck 1.0.3...
[INFO] checking quickcheck-1.0.3 against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] extracting crate quickcheck 1.0.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate quickcheck 1.0.3 on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate quickcheck 1.0.3
[INFO] finished tweaking crates.io crate quickcheck 1.0.3
[INFO] tweaked toml for crates.io crate quickcheck 1.0.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate quickcheck 1.0.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 212bcebd6be27a863e2f233414a9da3f9a3c76a05362670f90569f070f224d56
[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" "212bcebd6be27a863e2f233414a9da3f9a3c76a05362670f90569f070f224d56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "212bcebd6be27a863e2f233414a9da3f9a3c76a05362670f90569f070f224d56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "212bcebd6be27a863e2f233414a9da3f9a3c76a05362670f90569f070f224d56", kill_on_drop: false }`
[INFO] [stdout] 212bcebd6be27a863e2f233414a9da3f9a3c76a05362670f90569f070f224d56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ae2550503be304c36a5a81777404196d02bc5d74f520fec2bb9e135423fa652
[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" "5ae2550503be304c36a5a81777404196d02bc5d74f520fec2bb9e135423fa652", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling getrandom v0.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking rand_core v0.6.0
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking rand v0.8.0
[INFO] [stderr]     Checking env_logger v0.8.2
[INFO] [stderr]     Checking quickcheck v1.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/tester.rs:165:35
[INFO] [stdout]     |
[INFO] [stdout] 165 |             Err(result) => panic!(result.failed_msg()),
[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] 165 |             Err(result) => panic!("{}", result.failed_msg()),
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 165 |             Err(result) => std::panic::panic_any(result.failed_msg()),
[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/arbitrary.rs:1368:32
[INFO] [stdout]      |
[INFO] [stdout] 1368 |                           panic!(format!(
[INFO] [stdout]      |  ________________________________^
[INFO] [stdout] 1369 | |                             "Element {:?} was not found \
[INFO] [stdout] 1370 | |                              in shrink results {:?}",
[INFO] [stdout] 1371 | |                             n, shrunk
[INFO] [stdout] 1372 | |                         ));
[INFO] [stdout]      | |_________________________^
[INFO] [stdout] ...
[INFO] [stdout] 1381 |           define_float_eq!(f32);
[INFO] [stdout]      |           ---------------------- in this macro invocation
[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]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 1368 |                         panic!(
[INFO] [stdout] 1369 |                             "Element {:?} was not found \
[INFO] [stdout] 1370 |                              in shrink results {:?}",
[INFO] [stdout] 1371 |                             n, shrunk
[INFO] [stdout] 1372 |                         );
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/arbitrary.rs:1368:32
[INFO] [stdout]      |
[INFO] [stdout] 1368 |                           panic!(format!(
[INFO] [stdout]      |  ________________________________^
[INFO] [stdout] 1369 | |                             "Element {:?} was not found \
[INFO] [stdout] 1370 | |                              in shrink results {:?}",
[INFO] [stdout] 1371 | |                             n, shrunk
[INFO] [stdout] 1372 | |                         ));
[INFO] [stdout]      | |_________________________^
[INFO] [stdout] ...
[INFO] [stdout] 1393 |           define_float_eq!(f64);
[INFO] [stdout]      |           ---------------------- in this macro invocation
[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]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 1368 |                         panic!(
[INFO] [stdout] 1369 |                             "Element {:?} was not found \
[INFO] [stdout] 1370 |                              in shrink results {:?}",
[INFO] [stdout] 1371 |                             n, shrunk
[INFO] [stdout] 1372 |                         );
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/tester.rs:165:35
[INFO] [stdout]     |
[INFO] [stdout] 165 |             Err(result) => panic!(result.failed_msg()),
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[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] 165 |             Err(result) => panic!("{}", result.failed_msg()),
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 165 |             Err(result) => std::panic::panic_any(result.failed_msg()),
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.02s
[INFO] running `Command { std: "docker" "inspect" "5ae2550503be304c36a5a81777404196d02bc5d74f520fec2bb9e135423fa652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ae2550503be304c36a5a81777404196d02bc5d74f520fec2bb9e135423fa652", kill_on_drop: false }`
[INFO] [stdout] 5ae2550503be304c36a5a81777404196d02bc5d74f520fec2bb9e135423fa652