[INFO] cloning repository https://github.com/jasonlai/nsexec
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jasonlai/nsexec" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjasonlai%2Fnsexec", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjasonlai%2Fnsexec'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f90b8d7027f91862eb22ed3486a381e9b2d242b
[INFO] testing jasonlai/nsexec against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjasonlai%2Fnsexec" "/workspace/builds/worker-36/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-36/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jasonlai/nsexec on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jasonlai/nsexec
[INFO] finished tweaking git repo https://github.com/jasonlai/nsexec
[INFO] tweaked toml for git repo https://github.com/jasonlai/nsexec written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] crate git repo https://github.com/jasonlai/nsexec already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aeef1aa3f3549b0776fd21a1c4e8f7d1f56ad470866d74e8486b836924a50c88
[INFO] running `Command { std: "docker" "start" "-a" "aeef1aa3f3549b0776fd21a1c4e8f7d1f56ad470866d74e8486b836924a50c88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aeef1aa3f3549b0776fd21a1c4e8f7d1f56ad470866d74e8486b836924a50c88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeef1aa3f3549b0776fd21a1c4e8f7d1f56ad470866d74e8486b836924a50c88", kill_on_drop: false }`
[INFO] [stdout] aeef1aa3f3549b0776fd21a1c4e8f7d1f56ad470866d74e8486b836924a50c88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 093258b08c2328d1fe05473334c5124e2465389dd9960623439d5ac72534465a
[INFO] running `Command { std: "docker" "start" "-a" "093258b08c2328d1fe05473334c5124e2465389dd9960623439d5ac72534465a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.16
[INFO] [stderr]    Compiling argparse v0.2.1
[INFO] [stderr]    Compiling nsexec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/nsexec.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         try!({
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/nsexec.rs:41:55
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stdout]    |                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 41 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stdout] 41 +     fn from_arguments(args: Vec<String>, stdout: &mut dyn Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/nsexec.rs:41:75
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stdout]    |                                                                           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 41 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stdout] 41 +     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut dyn Write) -> Result<T, i32>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/nsexec.rs:73:55
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stdout]    |                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 73 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stdout] 73 +     fn from_arguments(args: Vec<String>, stdout: &mut dyn Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/nsexec.rs:73:75
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stdout]    |                                                                           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 73 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stdout] 73 +     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut dyn Write) -> Result<NSExecutor, i32> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/nsexec.rs:159:38
[INFO] [stdout]     |
[INFO] [stdout] 159 |         write!(fmt, "{}: {:?}", self.description(), self.value)
[INFO] [stdout]     |                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `readonly`
[INFO] [stdout]   --> src/nsexec.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     readonly: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Volume` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/nsexec.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Clone, Debug)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (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:85:20
[INFO] [stdout]    |
[INFO] [stdout] 85 |             panic!(executor.exec());
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 85 |             panic!("{}", executor.exec());
[INFO] [stdout]    |                    +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 85 |             std::panic::panic_any(executor.exec());
[INFO] [stdout]    |             ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.14s
[INFO] running `Command { std: "docker" "inspect" "093258b08c2328d1fe05473334c5124e2465389dd9960623439d5ac72534465a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "093258b08c2328d1fe05473334c5124e2465389dd9960623439d5ac72534465a", kill_on_drop: false }`
[INFO] [stdout] 093258b08c2328d1fe05473334c5124e2465389dd9960623439d5ac72534465a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e4bc647aa7fbfd71badd16bf85dd44e94bd7e9eedf41535eb31953b7894b650
[INFO] running `Command { std: "docker" "start" "-a" "2e4bc647aa7fbfd71badd16bf85dd44e94bd7e9eedf41535eb31953b7894b650", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling nsexec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/nsexec.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         try!({
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/nsexec.rs:41:55
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stdout]    |                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 41 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stdout] 41 +     fn from_arguments(args: Vec<String>, stdout: &mut dyn Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/nsexec.rs:41:75
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stdout]    |                                                                           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 41 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stdout] 41 +     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut dyn Write) -> Result<T, i32>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/nsexec.rs:73:55
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stdout]    |                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 73 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stdout] 73 +     fn from_arguments(args: Vec<String>, stdout: &mut dyn Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/nsexec.rs:73:75
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stdout]    |                                                                           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 73 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stdout] 73 +     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut dyn Write) -> Result<NSExecutor, i32> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/nsexec.rs:159:38
[INFO] [stdout]     |
[INFO] [stdout] 159 |         write!(fmt, "{}: {:?}", self.description(), self.value)
[INFO] [stdout]     |                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `readonly`
[INFO] [stdout]   --> src/nsexec.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     readonly: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Volume` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/nsexec.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Clone, Debug)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (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:85:20
[INFO] [stdout]    |
[INFO] [stdout] 85 |             panic!(executor.exec());
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 85 |             panic!("{}", executor.exec());
[INFO] [stdout]    |                    +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 85 |             std::panic::panic_any(executor.exec());
[INFO] [stdout]    |             ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `Command { std: "docker" "inspect" "2e4bc647aa7fbfd71badd16bf85dd44e94bd7e9eedf41535eb31953b7894b650", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e4bc647aa7fbfd71badd16bf85dd44e94bd7e9eedf41535eb31953b7894b650", kill_on_drop: false }`
[INFO] [stdout] 2e4bc647aa7fbfd71badd16bf85dd44e94bd7e9eedf41535eb31953b7894b650
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c1ea5818b714e1b3447c713629bcb74797f599cfdfa6c215e8d79a5517028670
[INFO] running `Command { std: "docker" "start" "-a" "c1ea5818b714e1b3447c713629bcb74797f599cfdfa6c215e8d79a5517028670", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/nsexec.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |         try!({
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nsexec.rs:41:55
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stderr]    |                                                       ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 41 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stderr] 41 +     fn from_arguments(args: Vec<String>, stdout: &mut dyn Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nsexec.rs:41:75
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stderr]    |                                                                           ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 41 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<T, i32>;
[INFO] [stderr] 41 +     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut dyn Write) -> Result<T, i32>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nsexec.rs:73:55
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stderr]    |                                                       ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 73 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stderr] 73 +     fn from_arguments(args: Vec<String>, stdout: &mut dyn Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nsexec.rs:73:75
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stderr]    |                                                                           ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 73 -     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut Write) -> Result<NSExecutor, i32> {
[INFO] [stderr] 73 +     fn from_arguments(args: Vec<String>, stdout: &mut Write, stderr: &mut dyn Write) -> Result<NSExecutor, i32> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/nsexec.rs:159:38
[INFO] [stderr]     |
[INFO] [stderr] 159 |         write!(fmt, "{}: {:?}", self.description(), self.value)
[INFO] [stderr]     |                                      ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `readonly`
[INFO] [stderr]   --> src/nsexec.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     readonly: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Volume` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/nsexec.rs:21:10
[INFO] [stderr]    |
[INFO] [stderr] 21 | #[derive(Clone, Debug)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (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:85:20
[INFO] [stderr]    |
[INFO] [stderr] 85 |             panic!(executor.exec());
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]    |
[INFO] [stderr] 85 |             panic!("{}", executor.exec());
[INFO] [stderr]    |                    +++++
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]    |
[INFO] [stderr] 85 |             std::panic::panic_any(executor.exec());
[INFO] [stderr]    |             ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stderr] 
[INFO] [stderr] warning: `nsexec` (bin "nsexec" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nsexec-dddcc59c28493ef3)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c1ea5818b714e1b3447c713629bcb74797f599cfdfa6c215e8d79a5517028670", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1ea5818b714e1b3447c713629bcb74797f599cfdfa6c215e8d79a5517028670", kill_on_drop: false }`
[INFO] [stdout] c1ea5818b714e1b3447c713629bcb74797f599cfdfa6c215e8d79a5517028670