[INFO] cloning repository https://github.com/pexip/os-rust-quickcheck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pexip/os-rust-quickcheck" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpexip%2Fos-rust-quickcheck", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpexip%2Fos-rust-quickcheck'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6b5e1aaba7fa847241f76b499a6fa0f862baf83
[INFO] checking pexip/os-rust-quickcheck against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpexip%2Fos-rust-quickcheck" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pexip/os-rust-quickcheck
[INFO] finished tweaking git repo https://github.com/pexip/os-rust-quickcheck
[INFO] tweaked toml for git repo https://github.com/pexip/os-rust-quickcheck written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pexip/os-rust-quickcheck on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pexip/os-rust-quickcheck already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_core v0.6.0
[INFO] [stderr]   Downloaded rand v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad1a61a84c8db41639a7c7b2e0a2fd0ba26e36474dab08d94c6063cb4eed872c
[INFO] running `Command { std: "docker" "start" "-a" "ad1a61a84c8db41639a7c7b2e0a2fd0ba26e36474dab08d94c6063cb4eed872c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad1a61a84c8db41639a7c7b2e0a2fd0ba26e36474dab08d94c6063cb4eed872c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad1a61a84c8db41639a7c7b2e0a2fd0ba26e36474dab08d94c6063cb4eed872c", kill_on_drop: false }`
[INFO] [stdout] ad1a61a84c8db41639a7c7b2e0a2fd0ba26e36474dab08d94c6063cb4eed872c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d11f3e2f6c9e7f9018d4062da7ceaf21377aa299578db29a11da1a492862179
[INFO] running `Command { std: "docker" "start" "-a" "8d11f3e2f6c9e7f9018d4062da7ceaf21377aa299578db29a11da1a492862179", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling getrandom v0.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking rand_core v0.6.0
[INFO] [stderr]     Checking rand v0.8.0
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking env_logger v0.8.2
[INFO] [stderr]     Checking quickcheck v1.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `AShow` is never used
[INFO] [stdout]    --> src/tester.rs:416:7
[INFO] [stdout]     |
[INFO] [stdout] 416 | trait AShow: Arbitrary + Debug {}
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]      = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]      = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout]      = note: this warning originates in the macro `define_float_eq` (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: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[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 the macro `define_float_eq` (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: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AShow` is never used
[INFO] [stdout]    --> src/tester.rs:416:7
[INFO] [stdout]     |
[INFO] [stdout] 416 | trait AShow: Arbitrary + Debug {}
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[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] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.76s
[INFO] running `Command { std: "docker" "inspect" "8d11f3e2f6c9e7f9018d4062da7ceaf21377aa299578db29a11da1a492862179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d11f3e2f6c9e7f9018d4062da7ceaf21377aa299578db29a11da1a492862179", kill_on_drop: false }`
[INFO] [stdout] 8d11f3e2f6c9e7f9018d4062da7ceaf21377aa299578db29a11da1a492862179
