[INFO] cloning repository https://github.com/liufuyang/plr-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/liufuyang/plr-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliufuyang%2Fplr-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliufuyang%2Fplr-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c0f726d5dcc5c32833fc753f7a9a886b089673d3
[INFO] checking liufuyang/plr-test/c0f726d5dcc5c32833fc753f7a9a886b089673d3 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliufuyang%2Fplr-test" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/liufuyang/plr-test
[INFO] finished tweaking git repo https://github.com/liufuyang/plr-test
[INFO] tweaked toml for git repo https://github.com/liufuyang/plr-test written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/liufuyang/plr-test on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/liufuyang/plr-test 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/liufuyang/plr`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.119
[INFO] [stderr]   Downloaded structopt-derive v0.4.14
[INFO] [stderr]   Downloaded rand_core v0.6.1
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[INFO] [stderr]   Downloaded wasi v0.10.1+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded az v1.0.0
[INFO] [stderr]   Downloaded serde v1.0.119
[INFO] [stderr]   Downloaded rug v1.11.0
[INFO] [stderr]   Downloaded serde_json v1.0.61
[INFO] [stderr]   Downloaded rand v0.8.2
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.4.2
[INFO] [stderr]   Downloaded getrandom v0.2.1
[INFO] [stderr]   Downloaded structopt v0.3.21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16da2c699fd3b084ee635ae8fa0e87ca43726d3ced8fd7c3591f4c29c614bc6c
[INFO] running `Command { std: "docker" "start" "-a" "16da2c699fd3b084ee635ae8fa0e87ca43726d3ced8fd7c3591f4c29c614bc6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16da2c699fd3b084ee635ae8fa0e87ca43726d3ced8fd7c3591f4c29c614bc6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16da2c699fd3b084ee635ae8fa0e87ca43726d3ced8fd7c3591f4c29c614bc6c", kill_on_drop: false }`
[INFO] [stdout] 16da2c699fd3b084ee635ae8fa0e87ca43726d3ced8fd7c3591f4c29c614bc6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62fe1c978b6ffab36caa028605e94d7467108ea06b3a3b09c8e51df7cbfc46e6
[INFO] running `Command { std: "docker" "start" "-a" "62fe1c978b6ffab36caa028605e94d7467108ea06b3a3b09c8e51df7cbfc46e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.2
[INFO] [stderr]    Compiling serde v1.0.119
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling rug v1.11.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking az v1.0.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking rand v0.8.2
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking plr v0.1.6 (https://github.com/liufuyang/plr#ea40e073)
[INFO] [stderr]     Checking plr-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `plr::GreedyPLR`
[INFO] [stdout]  --> examples/example1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use plr::GreedyPLR;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^ no `GreedyPLR` in the root
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct instead
[INFO] [stdout]   |
[INFO] [stdout] 1 | use plr::regression::GreedyPLR;
[INFO] [stdout]   |          ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `plr-test` (example "example1") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:33:44
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 .unwrap_or_else(|e| panic!(format!("{} on line {}", e.to_string(), n + 1)))
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 33 -                 .unwrap_or_else(|e| panic!(format!("{} on line {}", e.to_string(), n + 1)))
[INFO] [stdout] 33 +                 .unwrap_or_else(|e| panic!("{} on line {}", e.to_string(), n + 1))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:37:32
[INFO] [stdout]    |
[INFO] [stdout] 37 |                           panic!(format!(
[INFO] [stdout]    |  ________________________________^
[INFO] [stdout] 38 | |                             "{} on line {}, while parsing string \"{}\"",
[INFO] [stdout] 39 | |                             e.to_string(),
[INFO] [stdout] 40 | |                             n + 1,
[INFO] [stdout] 41 | |                             s
[INFO] [stdout] 42 | |                         ))
[INFO] [stdout]    | |_________________________^
[INFO] [stdout]    |
[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] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 37 ~                         panic!(
[INFO] [stdout] 38 |                             "{} on line {}, while parsing string \"{}\"",
[INFO] [stdout] ...
[INFO] [stdout] 41 |                             s
[INFO] [stdout] 42 ~                         )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:51:28
[INFO] [stdout]    |
[INFO] [stdout] 51 |                       panic!(format!(
[INFO] [stdout]    |  ____________________________^
[INFO] [stdout] 52 | |                         "need 2 values but less than that on line {}, while parsing \"{:?}\"",
[INFO] [stdout] 53 | |                         n + 1,
[INFO] [stdout] 54 | |                         v
[INFO] [stdout] 55 | |                     ))
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[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] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 51 ~                     panic!(
[INFO] [stdout] 52 |                         "need 2 values but less than that on line {}, while parsing \"{:?}\"",
[INFO] [stdout] 53 |                         n + 1,
[INFO] [stdout] 54 |                         v
[INFO] [stdout] 55 ~                     )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:58:28
[INFO] [stdout]    |
[INFO] [stdout] 58 |                       panic!(format!(
[INFO] [stdout]    |  ____________________________^
[INFO] [stdout] 59 | |                         "need 2 values but less than that on line {}, while parsing \"{:?}\"",
[INFO] [stdout] 60 | |                         n + 1,
[INFO] [stdout] 61 | |                         v
[INFO] [stdout] 62 | |                     ))
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[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] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 58 ~                     panic!(
[INFO] [stdout] 59 |                         "need 2 values but less than that on line {}, while parsing \"{:?}\"",
[INFO] [stdout] 60 |                         n + 1,
[INFO] [stdout] 61 |                         v
[INFO] [stdout] 62 ~                     )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:33:44
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 .unwrap_or_else(|e| panic!(format!("{} on line {}", e.to_string(), n + 1)))
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 33 -                 .unwrap_or_else(|e| panic!(format!("{} on line {}", e.to_string(), n + 1)))
[INFO] [stdout] 33 +                 .unwrap_or_else(|e| panic!("{} on line {}", e.to_string(), n + 1))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:37:32
[INFO] [stdout]    |
[INFO] [stdout] 37 |                           panic!(format!(
[INFO] [stdout]    |  ________________________________^
[INFO] [stdout] 38 | |                             "{} on line {}, while parsing string \"{}\"",
[INFO] [stdout] 39 | |                             e.to_string(),
[INFO] [stdout] 40 | |                             n + 1,
[INFO] [stdout] 41 | |                             s
[INFO] [stdout] 42 | |                         ))
[INFO] [stdout]    | |_________________________^
[INFO] [stdout]    |
[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] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 37 ~                         panic!(
[INFO] [stdout] 38 |                             "{} on line {}, while parsing string \"{}\"",
[INFO] [stdout] ...
[INFO] [stdout] 41 |                             s
[INFO] [stdout] 42 ~                         )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:51:28
[INFO] [stdout]    |
[INFO] [stdout] 51 |                       panic!(format!(
[INFO] [stdout]    |  ____________________________^
[INFO] [stdout] 52 | |                         "need 2 values but less than that on line {}, while parsing \"{:?}\"",
[INFO] [stdout] 53 | |                         n + 1,
[INFO] [stdout] 54 | |                         v
[INFO] [stdout] 55 | |                     ))
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[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] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 51 ~                     panic!(
[INFO] [stdout] 52 |                         "need 2 values but less than that on line {}, while parsing \"{:?}\"",
[INFO] [stdout] 53 |                         n + 1,
[INFO] [stdout] 54 |                         v
[INFO] [stdout] 55 ~                     )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:58:28
[INFO] [stdout]    |
[INFO] [stdout] 58 |                       panic!(format!(
[INFO] [stdout]    |  ____________________________^
[INFO] [stdout] 59 | |                         "need 2 values but less than that on line {}, while parsing \"{:?}\"",
[INFO] [stdout] 60 | |                         n + 1,
[INFO] [stdout] 61 | |                         v
[INFO] [stdout] 62 | |                     ))
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[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] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 58 ~                     panic!(
[INFO] [stdout] 59 |                         "need 2 values but less than that on line {}, while parsing \"{:?}\"",
[INFO] [stdout] 60 |                         n + 1,
[INFO] [stdout] 61 |                         v
[INFO] [stdout] 62 ~                     )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "62fe1c978b6ffab36caa028605e94d7467108ea06b3a3b09c8e51df7cbfc46e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62fe1c978b6ffab36caa028605e94d7467108ea06b3a3b09c8e51df7cbfc46e6", kill_on_drop: false }`
[INFO] [stdout] 62fe1c978b6ffab36caa028605e94d7467108ea06b3a3b09c8e51df7cbfc46e6
