[INFO] crate calm 0.1.0 is already in cache
[INFO] testing calm-0.1.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate calm 0.1.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate calm 0.1.0 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate calm 0.1.0
[INFO] finished tweaking crates.io crate calm 0.1.0
[INFO] tweaked toml for crates.io crate calm 0.1.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 22766be3f1301f9a3ac2e532fd1e2a7e3a601fdba70f08e4479a08aeffc1fafd
[INFO] running `"docker" "start" "-a" "22766be3f1301f9a3ac2e532fd1e2a7e3a601fdba70f08e4479a08aeffc1fafd"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling sha1 v0.2.0
[INFO] [stderr]    Compiling yaml-rust v0.4.4
[INFO] [stderr]    Compiling string_cache v0.8.0
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling terminal_size v0.1.12
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling termios v0.3.2
[INFO] [stderr]    Compiling clicolors-control v1.0.1
[INFO] [stderr]    Compiling termios v0.2.2
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling curl-sys v0.4.31+curl-7.70.0
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling clicolors-control v0.3.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling console v0.11.3
[INFO] [stderr]    Compiling parking_lot v0.4.8
[INFO] [stderr]    Compiling dotenv v0.10.1
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling console v0.5.0
[INFO] [stderr]    Compiling indicatif v0.6.0
[INFO] [stderr]    Compiling serde_yaml v0.7.5
[INFO] [stderr]    Compiling elementtree v0.5.0
[INFO] [stderr]    Compiling libgit2-sys v0.6.19
[INFO] [stderr]    Compiling git2 v0.6.11
[INFO] [stderr]    Compiling calm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ctx.rs:114:23
[INFO] [stderr]     |
[INFO] [stderr] 114 |         -> Result<Box<Runtime<'a> + 'a>>
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Runtime<'a> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rt/common.rs:32:35
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn update_env(&self, _f: &mut FnMut(&OsStr, &OsStr)) -> Result<()> {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&OsStr, &OsStr)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rt/python.rs:64:34
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn update_env(&self, f: &mut FnMut(&OsStr, &OsStr)) -> Result<()> {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&OsStr, &OsStr)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rt/js.rs:59:34
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn update_env(&self, f: &mut FnMut(&OsStr, &OsStr)) -> Result<()> {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&OsStr, &OsStr)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tools.rs:24:23
[INFO] [stderr]    |
[INFO] [stderr] 24 |     runtimes: Vec<Box<Runtime<'a> + 'a>>,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Runtime<'a> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils/cmd.rs:32:31
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub on_stdout: Option<Box<FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils/cmd.rs:33:31
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub on_stderr: Option<Box<FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils/cmd.rs:48:48
[INFO] [stderr]    |
[INFO] [stderr] 48 |                           mut f: Option<&mut Box<FnMut(&str)
[INFO] [stderr]    |  ________________________________________________^
[INFO] [stderr] 49 | |                             -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    | |___________________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 48 |                         mut f: Option<&mut Box<dyn FnMut(&str)
[INFO] [stderr] 49 |                             -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]    --> src/config.rs:256:29
[INFO] [stderr]     |
[INFO] [stderr] 256 |         let mut cache_dir = env::home_dir().ok_or(
[INFO] [stderr]     |                             ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/errors.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | / error_chain! {
[INFO] [stderr] 11 | |     errors {
[INFO] [stderr] 12 | |         QuietExit(code: i32) {
[INFO] [stderr] 13 | |             description("calm quit")
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |     }
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/report.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | / lazy_static! {
[INFO] [stderr] 20 | |     static ref IDENT_RE: Regex = Regex::new(
[INFO] [stderr] 21 | |         r#"(?x)
[INFO] [stderr] 22 | |             [\d\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Lo}\p{Nl}$_]
[INFO] [stderr] 23 | |             [\d\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Lo}\p{Nl}\p{Mn}\p{Mc}\p{Nd}\p{Pc}$_]*
[INFO] [stderr] 24 | |         "#).unwrap();
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/utils/cmd.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 | /     lazy_static! {
[INFO] [stderr] 221 | |         static ref VAR_RE: Regex = Regex::new(
[INFO] [stderr] 222 | |             r"\$(\$|[a-zA-Z0-9_]+|\([^)]+\)|\{[^}]+\})").unwrap();
[INFO] [stderr] 223 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/utils/serde.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | / lazy_static! {
[INFO] [stderr] 15 | |     static ref REGEX_RE: Regex = Regex::new(
[INFO] [stderr] 16 | |         r#"(?sm)^\s*/(.*)/([a-z]*)\s*$"#).unwrap();
[INFO] [stderr] 17 | |     static ref LINK_RE: Regex = Regex::new(
[INFO] [stderr] 18 | |         r#"^(.+?)(?:\s+->\s+(.+?))?$"#).unwrap();
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/utils/serde.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | / lazy_static! {
[INFO] [stderr] 15 | |     static ref REGEX_RE: Regex = Regex::new(
[INFO] [stderr] 16 | |         r#"(?sm)^\s*/(.*)/([a-z]*)\s*$"#).unwrap();
[INFO] [stderr] 17 | |     static ref LINK_RE: Regex = Regex::new(
[INFO] [stderr] 18 | |         r#"^(.+?)(?:\s+->\s+(.+?))?$"#).unwrap();
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/utils/hooks.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / lazy_static! {
[INFO] [stderr] 13 | |     static ref HOOK_RE: Regex = Regex::new(
[INFO] [stderr] 14 | |         r#"(?m)^calm\s+hook\s+--exec-([\w-]+)\s+\|\|\s+exit\s+1\s*?\r?\n?"#).unwrap();
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/cli.rs:173:25
[INFO] [stderr]     |
[INFO] [stderr] 173 |     let mut cause = err.cause();
[INFO] [stderr]     |                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/cli.rs:176:27
[INFO] [stderr]     |
[INFO] [stderr] 176 |         cause = the_cause.cause();
[INFO] [stderr]     |                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/report.rs:103:42
[INFO] [stderr]     |
[INFO] [stderr] 103 |                 let stripped_line = line.trim_left();
[INFO] [stderr]     |                                          ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/report.rs:111:57
[INFO] [stderr]     |
[INFO] [stderr] 111 |                 write!(f, "\n  {}", style(stripped_line.trim_right()).dim())?;
[INFO] [stderr]     |                                                         ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | / error_chain! {
[INFO] [stderr] 11 | |     errors {
[INFO] [stderr] 12 | |         QuietExit(code: i32) {
[INFO] [stderr] 13 | |             description("calm quit")
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |     }
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/tools.rs:134:50
[INFO] [stderr]     |
[INFO] [stderr] 134 |             if let Some(report) = opts.and_then(|mut x| x.report.as_mut()) {
[INFO] [stderr]     |                                                  ----^
[INFO] [stderr]     |                                                  |
[INFO] [stderr]     |                                                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 11s
[INFO] running `"docker" "inspect" "22766be3f1301f9a3ac2e532fd1e2a7e3a601fdba70f08e4479a08aeffc1fafd"`
[INFO] running `"docker" "rm" "-f" "22766be3f1301f9a3ac2e532fd1e2a7e3a601fdba70f08e4479a08aeffc1fafd"`
[INFO] [stdout] 22766be3f1301f9a3ac2e532fd1e2a7e3a601fdba70f08e4479a08aeffc1fafd
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e1de56c8939d27d234e899d01fa806afe3555a45fb4b5aff0fdb3a67f6dc2173
[INFO] running `"docker" "start" "-a" "e1de56c8939d27d234e899d01fa806afe3555a45fb4b5aff0fdb3a67f6dc2173"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling calm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ctx.rs:114:23
[INFO] [stderr]     |
[INFO] [stderr] 114 |         -> Result<Box<Runtime<'a> + 'a>>
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Runtime<'a> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rt/common.rs:32:35
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn update_env(&self, _f: &mut FnMut(&OsStr, &OsStr)) -> Result<()> {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&OsStr, &OsStr)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rt/python.rs:64:34
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn update_env(&self, f: &mut FnMut(&OsStr, &OsStr)) -> Result<()> {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&OsStr, &OsStr)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rt/js.rs:59:34
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn update_env(&self, f: &mut FnMut(&OsStr, &OsStr)) -> Result<()> {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&OsStr, &OsStr)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tools.rs:24:23
[INFO] [stderr]    |
[INFO] [stderr] 24 |     runtimes: Vec<Box<Runtime<'a> + 'a>>,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Runtime<'a> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils/cmd.rs:32:31
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub on_stdout: Option<Box<FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils/cmd.rs:33:31
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub on_stderr: Option<Box<FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils/cmd.rs:48:48
[INFO] [stderr]    |
[INFO] [stderr] 48 |                           mut f: Option<&mut Box<FnMut(&str)
[INFO] [stderr]    |  ________________________________________________^
[INFO] [stderr] 49 | |                             -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    | |___________________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 48 |                         mut f: Option<&mut Box<dyn FnMut(&str)
[INFO] [stderr] 49 |                             -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]    --> src/config.rs:256:29
[INFO] [stderr]     |
[INFO] [stderr] 256 |         let mut cache_dir = env::home_dir().ok_or(
[INFO] [stderr]     |                             ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/errors.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | / error_chain! {
[INFO] [stderr] 11 | |     errors {
[INFO] [stderr] 12 | |         QuietExit(code: i32) {
[INFO] [stderr] 13 | |             description("calm quit")
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |     }
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/report.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | / lazy_static! {
[INFO] [stderr] 20 | |     static ref IDENT_RE: Regex = Regex::new(
[INFO] [stderr] 21 | |         r#"(?x)
[INFO] [stderr] 22 | |             [\d\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Lo}\p{Nl}$_]
[INFO] [stderr] 23 | |             [\d\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Lo}\p{Nl}\p{Mn}\p{Mc}\p{Nd}\p{Pc}$_]*
[INFO] [stderr] 24 | |         "#).unwrap();
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/utils/cmd.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 | /     lazy_static! {
[INFO] [stderr] 221 | |         static ref VAR_RE: Regex = Regex::new(
[INFO] [stderr] 222 | |             r"\$(\$|[a-zA-Z0-9_]+|\([^)]+\)|\{[^}]+\})").unwrap();
[INFO] [stderr] 223 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/utils/serde.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | / lazy_static! {
[INFO] [stderr] 15 | |     static ref REGEX_RE: Regex = Regex::new(
[INFO] [stderr] 16 | |         r#"(?sm)^\s*/(.*)/([a-z]*)\s*$"#).unwrap();
[INFO] [stderr] 17 | |     static ref LINK_RE: Regex = Regex::new(
[INFO] [stderr] 18 | |         r#"^(.+?)(?:\s+->\s+(.+?))?$"#).unwrap();
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/utils/serde.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | / lazy_static! {
[INFO] [stderr] 15 | |     static ref REGEX_RE: Regex = Regex::new(
[INFO] [stderr] 16 | |         r#"(?sm)^\s*/(.*)/([a-z]*)\s*$"#).unwrap();
[INFO] [stderr] 17 | |     static ref LINK_RE: Regex = Regex::new(
[INFO] [stderr] 18 | |         r#"^(.+?)(?:\s+->\s+(.+?))?$"#).unwrap();
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/utils/hooks.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / lazy_static! {
[INFO] [stderr] 13 | |     static ref HOOK_RE: Regex = Regex::new(
[INFO] [stderr] 14 | |         r#"(?m)^calm\s+hook\s+--exec-([\w-]+)\s+\|\|\s+exit\s+1\s*?\r?\n?"#).unwrap();
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/cli.rs:173:25
[INFO] [stderr]     |
[INFO] [stderr] 173 |     let mut cause = err.cause();
[INFO] [stderr]     |                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/cli.rs:176:27
[INFO] [stderr]     |
[INFO] [stderr] 176 |         cause = the_cause.cause();
[INFO] [stderr]     |                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/report.rs:103:42
[INFO] [stderr]     |
[INFO] [stderr] 103 |                 let stripped_line = line.trim_left();
[INFO] [stderr]     |                                          ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/report.rs:111:57
[INFO] [stderr]     |
[INFO] [stderr] 111 |                 write!(f, "\n  {}", style(stripped_line.trim_right()).dim())?;
[INFO] [stderr]     |                                                         ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | / error_chain! {
[INFO] [stderr] 11 | |     errors {
[INFO] [stderr] 12 | |         QuietExit(code: i32) {
[INFO] [stderr] 13 | |             description("calm quit")
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |     }
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/tools.rs:134:50
[INFO] [stderr]     |
[INFO] [stderr] 134 |             if let Some(report) = opts.and_then(|mut x| x.report.as_mut()) {
[INFO] [stderr]     |                                                  ----^
[INFO] [stderr]     |                                                  |
[INFO] [stderr]     |                                                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.81s
[INFO] running `"docker" "inspect" "e1de56c8939d27d234e899d01fa806afe3555a45fb4b5aff0fdb3a67f6dc2173"`
[INFO] running `"docker" "rm" "-f" "e1de56c8939d27d234e899d01fa806afe3555a45fb4b5aff0fdb3a67f6dc2173"`
[INFO] [stdout] e1de56c8939d27d234e899d01fa806afe3555a45fb4b5aff0fdb3a67f6dc2173
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stdout] 2f99ca4647434e94a8d274257573bfe16ec4ea707da26ff06533288e08465ad7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "2f99ca4647434e94a8d274257573bfe16ec4ea707da26ff06533288e08465ad7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ctx.rs:114:23
[INFO] [stderr]     |
[INFO] [stderr] 114 |         -> Result<Box<Runtime<'a> + 'a>>
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Runtime<'a> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rt/common.rs:32:35
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn update_env(&self, _f: &mut FnMut(&OsStr, &OsStr)) -> Result<()> {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&OsStr, &OsStr)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rt/python.rs:64:34
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn update_env(&self, f: &mut FnMut(&OsStr, &OsStr)) -> Result<()> {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&OsStr, &OsStr)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rt/js.rs:59:34
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn update_env(&self, f: &mut FnMut(&OsStr, &OsStr)) -> Result<()> {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&OsStr, &OsStr)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tools.rs:24:23
[INFO] [stderr]    |
[INFO] [stderr] 24 |     runtimes: Vec<Box<Runtime<'a> + 'a>>,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Runtime<'a> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils/cmd.rs:32:31
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub on_stdout: Option<Box<FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils/cmd.rs:33:31
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub on_stderr: Option<Box<FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&str) -> Result<Cow<'static, str>> + Send + Sync + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils/cmd.rs:48:48
[INFO] [stderr]    |
[INFO] [stderr] 48 |                           mut f: Option<&mut Box<FnMut(&str)
[INFO] [stderr]    |  ________________________________________________^
[INFO] [stderr] 49 | |                             -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    | |___________________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 48 |                         mut f: Option<&mut Box<dyn FnMut(&str)
[INFO] [stderr] 49 |                             -> Result<Cow<'static, str>> + Send + Sync + 'a>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]    --> src/config.rs:256:29
[INFO] [stderr]     |
[INFO] [stderr] 256 |         let mut cache_dir = env::home_dir().ok_or(
[INFO] [stderr]     |                             ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/errors.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | / error_chain! {
[INFO] [stderr] 11 | |     errors {
[INFO] [stderr] 12 | |         QuietExit(code: i32) {
[INFO] [stderr] 13 | |             description("calm quit")
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |     }
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/report.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | / lazy_static! {
[INFO] [stderr] 20 | |     static ref IDENT_RE: Regex = Regex::new(
[INFO] [stderr] 21 | |         r#"(?x)
[INFO] [stderr] 22 | |             [\d\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Lo}\p{Nl}$_]
[INFO] [stderr] 23 | |             [\d\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Lo}\p{Nl}\p{Mn}\p{Mc}\p{Nd}\p{Pc}$_]*
[INFO] [stderr] 24 | |         "#).unwrap();
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/utils/cmd.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 | /     lazy_static! {
[INFO] [stderr] 221 | |         static ref VAR_RE: Regex = Regex::new(
[INFO] [stderr] 222 | |             r"\$(\$|[a-zA-Z0-9_]+|\([^)]+\)|\{[^}]+\})").unwrap();
[INFO] [stderr] 223 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/utils/serde.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | / lazy_static! {
[INFO] [stderr] 15 | |     static ref REGEX_RE: Regex = Regex::new(
[INFO] [stderr] 16 | |         r#"(?sm)^\s*/(.*)/([a-z]*)\s*$"#).unwrap();
[INFO] [stderr] 17 | |     static ref LINK_RE: Regex = Regex::new(
[INFO] [stderr] 18 | |         r#"^(.+?)(?:\s+->\s+(.+?))?$"#).unwrap();
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/utils/serde.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | / lazy_static! {
[INFO] [stderr] 15 | |     static ref REGEX_RE: Regex = Regex::new(
[INFO] [stderr] 16 | |         r#"(?sm)^\s*/(.*)/([a-z]*)\s*$"#).unwrap();
[INFO] [stderr] 17 | |     static ref LINK_RE: Regex = Regex::new(
[INFO] [stderr] 18 | |         r#"^(.+?)(?:\s+->\s+(.+?))?$"#).unwrap();
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/utils/hooks.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / lazy_static! {
[INFO] [stderr] 13 | |     static ref HOOK_RE: Regex = Regex::new(
[INFO] [stderr] 14 | |         r#"(?m)^calm\s+hook\s+--exec-([\w-]+)\s+\|\|\s+exit\s+1\s*?\r?\n?"#).unwrap();
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/cli.rs:173:25
[INFO] [stderr]     |
[INFO] [stderr] 173 |     let mut cause = err.cause();
[INFO] [stderr]     |                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/cli.rs:176:27
[INFO] [stderr]     |
[INFO] [stderr] 176 |         cause = the_cause.cause();
[INFO] [stderr]     |                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/report.rs:103:42
[INFO] [stderr]     |
[INFO] [stderr] 103 |                 let stripped_line = line.trim_left();
[INFO] [stderr]     |                                          ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/report.rs:111:57
[INFO] [stderr]     |
[INFO] [stderr] 111 |                 write!(f, "\n  {}", style(stripped_line.trim_right()).dim())?;
[INFO] [stderr]     |                                                         ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | / error_chain! {
[INFO] [stderr] 11 | |     errors {
[INFO] [stderr] 12 | |         QuietExit(code: i32) {
[INFO] [stderr] 13 | |             description("calm quit")
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |     }
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/tools.rs:134:50
[INFO] [stderr]     |
[INFO] [stderr] 134 |             if let Some(report) = opts.and_then(|mut x| x.report.as_mut()) {
[INFO] [stderr]     |                                                  ----^
[INFO] [stderr]     |                                                  |
[INFO] [stderr]     |                                                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/calm-af5b6321d992d261
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2f99ca4647434e94a8d274257573bfe16ec4ea707da26ff06533288e08465ad7"`
[INFO] running `"docker" "rm" "-f" "2f99ca4647434e94a8d274257573bfe16ec4ea707da26ff06533288e08465ad7"`
[INFO] [stdout] 2f99ca4647434e94a8d274257573bfe16ec4ea707da26ff06533288e08465ad7