[INFO] cloning repository https://github.com/qiuzhanghua/single_pass [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qiuzhanghua/single_pass" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqiuzhanghua%2Fsingle_pass", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqiuzhanghua%2Fsingle_pass'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] db0154fa6f479d23c01fdb8e9f4f7b43bce460b1 [INFO] testing qiuzhanghua/single_pass against beta-2022-04-10 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqiuzhanghua%2Fsingle_pass" "/workspace/builds/worker-21/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/qiuzhanghua/single_pass on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/qiuzhanghua/single_pass [INFO] finished tweaking git repo https://github.com/qiuzhanghua/single_pass [INFO] tweaked toml for git repo https://github.com/qiuzhanghua/single_pass written to /workspace/builds/worker-21/source/Cargo.toml [INFO] crate git repo https://github.com/qiuzhanghua/single_pass already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5f803428e2b44796b1364d58d8ef496b54d4d8bcc8c094a19dbcb28a26bcfb28 [INFO] running `Command { std: "docker" "start" "-a" "5f803428e2b44796b1364d58d8ef496b54d4d8bcc8c094a19dbcb28a26bcfb28", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5f803428e2b44796b1364d58d8ef496b54d4d8bcc8c094a19dbcb28a26bcfb28", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5f803428e2b44796b1364d58d8ef496b54d4d8bcc8c094a19dbcb28a26bcfb28", kill_on_drop: false }` [INFO] [stdout] 5f803428e2b44796b1364d58d8ef496b54d4d8bcc8c094a19dbcb28a26bcfb28 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 11a837b523eb28afde9f577c485248279f7bf24c7780e4a22a501a36ede1d218 [INFO] running `Command { std: "docker" "start" "-a" "11a837b523eb28afde9f577c485248279f7bf24c7780e4a22a501a36ede1d218", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling memchr v2.3.2 [INFO] [stderr] Compiling proc-macro2 v1.0.8 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling serde v1.0.104 [INFO] [stderr] Compiling ryu v1.0.2 [INFO] [stderr] Compiling encoding_rs v0.8.22 [INFO] [stderr] Compiling syn v1.0.14 [INFO] [stderr] Compiling unicode-width v0.1.7 [INFO] [stderr] Compiling itoa v0.4.5 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling yaml-rust v0.3.5 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling vec_map v0.8.1 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Compiling regex-automata v0.1.8 [INFO] [stderr] Compiling csv-core v0.1.10 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling time v0.1.42 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling encoding_rs_io v0.1.7 [INFO] [stderr] Compiling chrono v0.4.10 [INFO] [stderr] Compiling serde_derive v1.0.104 [INFO] [stderr] Compiling bstr v0.2.11 [INFO] [stderr] Compiling csv v1.1.3 [INFO] [stderr] Compiling single_pass v0.2.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: field is never read: `id` [INFO] [stdout] --> src/main.rs:186:5 [INFO] [stdout] | [INFO] [stdout] 186 | id: String, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `Doc` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:184:10 [INFO] [stdout] | [INFO] [stdout] 184 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `title` [INFO] [stdout] --> src/main.rs:187:5 [INFO] [stdout] | [INFO] [stdout] 187 | title: String, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Doc` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:184:10 [INFO] [stdout] | [INFO] [stdout] 184 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `id` [INFO] [stdout] --> src/main.rs:193:5 [INFO] [stdout] | [INFO] [stdout] 193 | id: String, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Cluster` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:191:10 [INFO] [stdout] | [INFO] [stdout] 191 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:56:28 [INFO] [stdout] | [INFO] [stdout] 56 | panic!(e.to_string()) [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 [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 56 | panic!("{}", e.to_string()) [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 55.73s [INFO] running `Command { std: "docker" "inspect" "11a837b523eb28afde9f577c485248279f7bf24c7780e4a22a501a36ede1d218", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "11a837b523eb28afde9f577c485248279f7bf24c7780e4a22a501a36ede1d218", kill_on_drop: false }` [INFO] [stdout] 11a837b523eb28afde9f577c485248279f7bf24c7780e4a22a501a36ede1d218 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b5faa78a4ad5e4874e7c9c8e5f4c5bb75327c6c92bb57e1b040f948345a8e562 [INFO] running `Command { std: "docker" "start" "-a" "b5faa78a4ad5e4874e7c9c8e5f4c5bb75327c6c92bb57e1b040f948345a8e562", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling single_pass v0.2.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::fs::File` [INFO] [stdout] --> src/main.rs:201:9 [INFO] [stdout] | [INFO] [stdout] 201 | use std::fs::File; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] help: consider adding a `#[cfg(test)]` to the containing module [INFO] [stdout] --> src/main.rs:200:1 [INFO] [stdout] | [INFO] [stdout] 200 | mod tests { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BufRead`, `BufReader` [INFO] [stdout] --> src/main.rs:202:19 [INFO] [stdout] | [INFO] [stdout] 202 | use std::io::{BufRead, BufReader}; [INFO] [stdout] | ^^^^^^^ ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: consider adding a `#[cfg(test)]` to the containing module [INFO] [stdout] --> src/main.rs:200:1 [INFO] [stdout] | [INFO] [stdout] 200 | mod tests { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `id` [INFO] [stdout] --> src/main.rs:186:5 [INFO] [stdout] | [INFO] [stdout] 186 | id: String, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `Doc` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:184:10 [INFO] [stdout] | [INFO] [stdout] 184 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `title` [INFO] [stdout] --> src/main.rs:187:5 [INFO] [stdout] | [INFO] [stdout] 187 | title: String, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Doc` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:184:10 [INFO] [stdout] | [INFO] [stdout] 184 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `id` [INFO] [stdout] --> src/main.rs:193:5 [INFO] [stdout] | [INFO] [stdout] 193 | id: String, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Cluster` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:191:10 [INFO] [stdout] | [INFO] [stdout] 191 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:56:28 [INFO] [stdout] | [INFO] [stdout] 56 | panic!(e.to_string()) [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 [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 56 | panic!("{}", e.to_string()) [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 6.59s [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/single_pass-6f3d7136854fa761) [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/single_pass-cb702cbcc827612b) [INFO] running `Command { std: "docker" "inspect" "b5faa78a4ad5e4874e7c9c8e5f4c5bb75327c6c92bb57e1b040f948345a8e562", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b5faa78a4ad5e4874e7c9c8e5f4c5bb75327c6c92bb57e1b040f948345a8e562", kill_on_drop: false }` [INFO] [stdout] b5faa78a4ad5e4874e7c9c8e5f4c5bb75327c6c92bb57e1b040f948345a8e562 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 5e4e788615a20381e48c403443c5285ab44d4d85d8393de078b142a893e8d386 [INFO] running `Command { std: "docker" "start" "-a" "5e4e788615a20381e48c403443c5285ab44d4d85d8393de078b142a893e8d386", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused import: `std::fs::File` [INFO] [stderr] --> src/main.rs:201:9 [INFO] [stderr] | [INFO] [stderr] 201 | use std::fs::File; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] help: consider adding a `#[cfg(test)]` to the containing module [INFO] [stderr] --> src/main.rs:200:1 [INFO] [stderr] | [INFO] [stderr] 200 | mod tests { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BufRead`, `BufReader` [INFO] [stderr] --> src/main.rs:202:19 [INFO] [stderr] | [INFO] [stderr] 202 | use std::io::{BufRead, BufReader}; [INFO] [stderr] | ^^^^^^^ ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] help: consider adding a `#[cfg(test)]` to the containing module [INFO] [stderr] --> src/main.rs:200:1 [INFO] [stderr] | [INFO] [stderr] 200 | mod tests { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `id` [INFO] [stderr] --> src/main.rs:186:5 [INFO] [stderr] | [INFO] [stderr] 186 | id: String, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] note: `Doc` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/main.rs:184:10 [INFO] [stderr] | [INFO] [stderr] 184 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `title` [INFO] [stderr] --> src/main.rs:187:5 [INFO] [stderr] | [INFO] [stderr] 187 | title: String, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Doc` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/main.rs:184:10 [INFO] [stderr] | [INFO] [stderr] 184 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `id` [INFO] [stderr] --> src/main.rs:193:5 [INFO] [stderr] | [INFO] [stderr] 193 | id: String, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Cluster` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/main.rs:191:10 [INFO] [stderr] | [INFO] [stderr] 191 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: panic message is not a string literal [INFO] [stderr] --> src/main.rs:56:28 [INFO] [stderr] | [INFO] [stderr] 56 | panic!(e.to_string()) [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stderr] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: add a "{}" format string to Display the message [INFO] [stderr] | [INFO] [stderr] 56 | panic!("{}", e.to_string()) [INFO] [stderr] | +++++ [INFO] [stderr] [INFO] [stderr] warning: `single_pass` (bin "single_pass" test) generated 6 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 4.35s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/single_pass-6f3d7136854fa761) [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test tests::test_lcs ... ok [INFO] [stdout] test tests::test_lcs_2 ... ok [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/single_pass-cb702cbcc827612b) [INFO] [stdout] test tests::test_lcs_3 ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::test_file ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s [INFO] [stdout] [INFO] [stderr] Doc-tests single_pass [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - lcs::longest_common_substr (line 5) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.54s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "5e4e788615a20381e48c403443c5285ab44d4d85d8393de078b142a893e8d386", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e4e788615a20381e48c403443c5285ab44d4d85d8393de078b142a893e8d386", kill_on_drop: false }` [INFO] [stdout] 5e4e788615a20381e48c403443c5285ab44d4d85d8393de078b142a893e8d386