[INFO] cloning repository https://github.com/xurtis/isolate
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xurtis/isolate" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxurtis%2Fisolate", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxurtis%2Fisolate'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3bc1fc1fb3135f72a6b685fcbd3e0553abcc442
[INFO] testing xurtis/isolate 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%2Fxurtis%2Fisolate" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xurtis/isolate 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/xurtis/isolate
[INFO] finished tweaking git repo https://github.com/xurtis/isolate
[INFO] tweaked toml for git repo https://github.com/xurtis/isolate written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/xurtis/isolate 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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] cb2df229abc97f59435a53155cccd7d985403b3b42d2ab584cf3ea2c88ad9f02
[INFO] running `Command { std: "docker" "start" "-a" "cb2df229abc97f59435a53155cccd7d985403b3b42d2ab584cf3ea2c88ad9f02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb2df229abc97f59435a53155cccd7d985403b3b42d2ab584cf3ea2c88ad9f02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb2df229abc97f59435a53155cccd7d985403b3b42d2ab584cf3ea2c88ad9f02", kill_on_drop: false }`
[INFO] [stdout] cb2df229abc97f59435a53155cccd7d985403b3b42d2ab584cf3ea2c88ad9f02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 14f8da958d2e3fc498f33b2f47bb80c9ecd07601ae339a955d7649c786b41fd4
[INFO] running `Command { std: "docker" "start" "-a" "14f8da958d2e3fc498f33b2f47bb80c9ecd07601ae339a955d7649c786b41fd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.41
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling serde v1.0.64
[INFO] [stderr]    Compiling ucd-util v0.1.1
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling rustc-demangle v0.1.8
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.4
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling errno v0.2.3
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling syn v0.14.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling unshare v0.2.0
[INFO] [stderr]    Compiling backtrace v0.3.8
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling serde_derive v1.0.64
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling docopt v0.8.3
[INFO] [stderr]    Compiling isolate v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/control_group.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/control_group.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/ipc.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/ipc.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]  --> src/namespace/mount.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/network.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/network.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/pid.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/pid.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/uts.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/uts.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[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/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain!{
[INFO] [stdout] 5  | |     // Wrappers for other error_chains.
[INFO] [stdout] 6  | |     links {
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     }
[INFO] [stdout] 48 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/context.rs:36:22
[INFO] [stdout]    |
[INFO] [stdout] 36 |     namespaces: Vec<Box<Namespace>>,
[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] 36 -     namespaces: Vec<Box<Namespace>>,
[INFO] [stdout] 36 +     namespaces: Vec<Box<dyn Namespace>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:95:20
[INFO] [stdout]    |
[INFO] [stdout] 95 | impl Clone for Box<Namespace> {
[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] 95 - impl Clone for Box<Namespace> {
[INFO] [stdout] 95 + impl Clone for Box<dyn Namespace> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:83:29
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn box_clone(&self) -> Box<Namespace>;
[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] 83 -     fn box_clone(&self) -> Box<Namespace>;
[INFO] [stdout] 83 +     fn box_clone(&self) -> Box<dyn Namespace>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:90:29
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn box_clone(&self) -> Box<Namespace> {
[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] 90 -     fn box_clone(&self) -> Box<Namespace> {
[INFO] [stdout] 90 +     fn box_clone(&self) -> Box<dyn Namespace> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:96:25
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn clone(&self) -> Box<Namespace> {
[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] 96 -     fn clone(&self) -> Box<Namespace> {
[INFO] [stdout] 96 +     fn clone(&self) -> Box<dyn Namespace> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain!{
[INFO] [stdout] 5  | |     // Wrappers for other error_chains.
[INFO] [stdout] 6  | |     links {
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     }
[INFO] [stdout] 48 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Allow`
[INFO] [stdout]    --> src/namespace/user.rs:114:2
[INFO] [stdout]     |
[INFO] [stdout] 114 |     Allow,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/context.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / pub struct Context {
[INFO] [stdout] 36 | |     namespaces: Vec<Box<Namespace>>,
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout] 5  | #![warn(missing_debug_implementations)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]    --> src/context.rs:231:1
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub struct Child(pid_t);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/control_group.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct ControlGroup {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/ipc.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Ipc {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/network.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct Network {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/pid.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Pid {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/user.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | / pub struct User {
[INFO] [stdout] 32 | |     map_root_user: bool,
[INFO] [stdout] 33 | |     map_root_group: bool,
[INFO] [stdout] 34 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/uts.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Uts {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for an associated function
[INFO] [stdout]   --> src/namespace/mod.rs:83:2
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn box_clone(&self) -> Box<Namespace>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:3:9
[INFO] [stdout]    |
[INFO] [stdout] 3  | #![warn(missing_docs)]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]    --> src/main.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 |     config: Configuration,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.16s
[INFO] running `Command { std: "docker" "inspect" "14f8da958d2e3fc498f33b2f47bb80c9ecd07601ae339a955d7649c786b41fd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14f8da958d2e3fc498f33b2f47bb80c9ecd07601ae339a955d7649c786b41fd4", kill_on_drop: false }`
[INFO] [stdout] 14f8da958d2e3fc498f33b2f47bb80c9ecd07601ae339a955d7649c786b41fd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] abdcea8f9a3436d1dc93819c1c9cf8e9e5e95c91a4297f5378ca426771890649
[INFO] running `Command { std: "docker" "start" "-a" "abdcea8f9a3436d1dc93819c1c9cf8e9e5e95c91a4297f5378ca426771890649", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/control_group.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/control_group.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/ipc.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/ipc.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]  --> src/namespace/mount.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/network.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/network.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/pid.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/pid.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/uts.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/uts.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[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/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain!{
[INFO] [stdout] 5  | |     // Wrappers for other error_chains.
[INFO] [stdout] 6  | |     links {
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     }
[INFO] [stdout] 48 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/context.rs:36:22
[INFO] [stdout]    |
[INFO] [stdout] 36 |     namespaces: Vec<Box<Namespace>>,
[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] 36 -     namespaces: Vec<Box<Namespace>>,
[INFO] [stdout] 36 +     namespaces: Vec<Box<dyn Namespace>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:95:20
[INFO] [stdout]    |
[INFO] [stdout] 95 | impl Clone for Box<Namespace> {
[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] 95 - impl Clone for Box<Namespace> {
[INFO] [stdout] 95 + impl Clone for Box<dyn Namespace> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:83:29
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn box_clone(&self) -> Box<Namespace>;
[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] 83 -     fn box_clone(&self) -> Box<Namespace>;
[INFO] [stdout] 83 +     fn box_clone(&self) -> Box<dyn Namespace>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:90:29
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn box_clone(&self) -> Box<Namespace> {
[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] 90 -     fn box_clone(&self) -> Box<Namespace> {
[INFO] [stdout] 90 +     fn box_clone(&self) -> Box<dyn Namespace> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:96:25
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn clone(&self) -> Box<Namespace> {
[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] 96 -     fn clone(&self) -> Box<Namespace> {
[INFO] [stdout] 96 +     fn clone(&self) -> Box<dyn Namespace> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain!{
[INFO] [stdout] 5  | |     // Wrappers for other error_chains.
[INFO] [stdout] 6  | |     links {
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     }
[INFO] [stdout] 48 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Allow`
[INFO] [stdout]    --> src/namespace/user.rs:114:2
[INFO] [stdout]     |
[INFO] [stdout] 114 |     Allow,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/context.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / pub struct Context {
[INFO] [stdout] 36 | |     namespaces: Vec<Box<Namespace>>,
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout] 5  | #![warn(missing_debug_implementations)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]    --> src/context.rs:231:1
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub struct Child(pid_t);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/control_group.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct ControlGroup {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/ipc.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Ipc {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/network.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct Network {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/pid.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Pid {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/user.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | / pub struct User {
[INFO] [stdout] 32 | |     map_root_user: bool,
[INFO] [stdout] 33 | |     map_root_group: bool,
[INFO] [stdout] 34 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/uts.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Uts {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for an associated function
[INFO] [stdout]   --> src/namespace/mod.rs:83:2
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn box_clone(&self) -> Box<Namespace>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:3:9
[INFO] [stdout]    |
[INFO] [stdout] 3  | #![warn(missing_docs)]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling isolate v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/control_group.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/control_group.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/ipc.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/ipc.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]  --> src/namespace/mount.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/network.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/network.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/pid.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/pid.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::error::*`
[INFO] [stdout]  --> src/namespace/uts.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::error::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::Child`
[INFO] [stdout]  --> src/namespace/uts.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ::Child;
[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/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain!{
[INFO] [stdout] 5  | |     // Wrappers for other error_chains.
[INFO] [stdout] 6  | |     links {
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     }
[INFO] [stdout] 48 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/context.rs:36:22
[INFO] [stdout]    |
[INFO] [stdout] 36 |     namespaces: Vec<Box<Namespace>>,
[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] 36 -     namespaces: Vec<Box<Namespace>>,
[INFO] [stdout] 36 +     namespaces: Vec<Box<dyn Namespace>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:95:20
[INFO] [stdout]    |
[INFO] [stdout] 95 | impl Clone for Box<Namespace> {
[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] 95 - impl Clone for Box<Namespace> {
[INFO] [stdout] 95 + impl Clone for Box<dyn Namespace> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:83:29
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn box_clone(&self) -> Box<Namespace>;
[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] 83 -     fn box_clone(&self) -> Box<Namespace>;
[INFO] [stdout] 83 +     fn box_clone(&self) -> Box<dyn Namespace>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:90:29
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn box_clone(&self) -> Box<Namespace> {
[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] 90 -     fn box_clone(&self) -> Box<Namespace> {
[INFO] [stdout] 90 +     fn box_clone(&self) -> Box<dyn Namespace> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/namespace/mod.rs:96:25
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn clone(&self) -> Box<Namespace> {
[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] 96 -     fn clone(&self) -> Box<Namespace> {
[INFO] [stdout] 96 +     fn clone(&self) -> Box<dyn Namespace> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain!{
[INFO] [stdout] 5  | |     // Wrappers for other error_chains.
[INFO] [stdout] 6  | |     links {
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     }
[INFO] [stdout] 48 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Allow`
[INFO] [stdout]    --> src/namespace/user.rs:114:2
[INFO] [stdout]     |
[INFO] [stdout] 114 |     Allow,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/context.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / pub struct Context {
[INFO] [stdout] 36 | |     namespaces: Vec<Box<Namespace>>,
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout] 5  | #![warn(missing_debug_implementations)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]    --> src/context.rs:231:1
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub struct Child(pid_t);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/control_group.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct ControlGroup {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/ipc.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Ipc {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/network.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct Network {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/pid.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Pid {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/user.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | / pub struct User {
[INFO] [stdout] 32 | |     map_root_user: bool,
[INFO] [stdout] 33 | |     map_root_group: bool,
[INFO] [stdout] 34 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]   --> src/namespace/uts.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Uts {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]    --> src/main.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 |     config: Configuration,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/isolate-3c8c393f47147535)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/isolate-4618717310f38d1d)
[INFO] running `Command { std: "docker" "inspect" "abdcea8f9a3436d1dc93819c1c9cf8e9e5e95c91a4297f5378ca426771890649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abdcea8f9a3436d1dc93819c1c9cf8e9e5e95c91a4297f5378ca426771890649", kill_on_drop: false }`
[INFO] [stdout] abdcea8f9a3436d1dc93819c1c9cf8e9e5e95c91a4297f5378ca426771890649
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 3e1516f7f778ee72cc882c297845afa165307968cb72900ed73c98b9ec41fb65
[INFO] running `Command { std: "docker" "start" "-a" "3e1516f7f778ee72cc882c297845afa165307968cb72900ed73c98b9ec41fb65", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `::error::*`
[INFO] [stderr]  --> src/namespace/control_group.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use ::error::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `::Child`
[INFO] [stderr]  --> src/namespace/control_group.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use ::Child;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `::error::*`
[INFO] [stderr]  --> src/namespace/ipc.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use ::error::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `::Child`
[INFO] [stderr]  --> src/namespace/ipc.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use ::Child;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PathBuf`
[INFO] [stderr]  --> src/namespace/mount.rs:3:23
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                       ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `::error::*`
[INFO] [stderr]  --> src/namespace/network.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use ::error::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `::Child`
[INFO] [stderr]  --> src/namespace/network.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use ::Child;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `::error::*`
[INFO] [stderr]  --> src/namespace/pid.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use ::error::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `::Child`
[INFO] [stderr]  --> src/namespace/pid.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use ::Child;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `::error::*`
[INFO] [stderr]  --> src/namespace/uts.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use ::error::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `::Child`
[INFO] [stderr]  --> src/namespace/uts.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use ::Child;
[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/error.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / error_chain!{
[INFO] [stderr] 5  | |     // Wrappers for other error_chains.
[INFO] [stderr] 6  | |     links {
[INFO] [stderr] 7  | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 47 | |     }
[INFO] [stderr] 48 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:36:22
[INFO] [stderr]    |
[INFO] [stderr] 36 |     namespaces: Vec<Box<Namespace>>,
[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] 36 -     namespaces: Vec<Box<Namespace>>,
[INFO] [stderr] 36 +     namespaces: Vec<Box<dyn Namespace>>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/namespace/mod.rs:95:20
[INFO] [stderr]    |
[INFO] [stderr] 95 | impl Clone for Box<Namespace> {
[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] 95 - impl Clone for Box<Namespace> {
[INFO] [stderr] 95 + impl Clone for Box<dyn Namespace> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/namespace/mod.rs:83:29
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn box_clone(&self) -> Box<Namespace>;
[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] 83 -     fn box_clone(&self) -> Box<Namespace>;
[INFO] [stderr] 83 +     fn box_clone(&self) -> Box<dyn Namespace>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/namespace/mod.rs:90:29
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn box_clone(&self) -> Box<Namespace> {
[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] 90 -     fn box_clone(&self) -> Box<Namespace> {
[INFO] [stderr] 90 +     fn box_clone(&self) -> Box<dyn Namespace> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/namespace/mod.rs:96:25
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn clone(&self) -> Box<Namespace> {
[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] 96 -     fn clone(&self) -> Box<Namespace> {
[INFO] [stderr] 96 +     fn clone(&self) -> Box<dyn Namespace> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / error_chain!{
[INFO] [stderr] 5  | |     // Wrappers for other error_chains.
[INFO] [stderr] 6  | |     links {
[INFO] [stderr] 7  | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 47 | |     }
[INFO] [stderr] 48 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Allow`
[INFO] [stderr]    --> src/namespace/user.rs:114:2
[INFO] [stderr]     |
[INFO] [stderr] 114 |     Allow,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stderr]   --> src/context.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | / pub struct Context {
[INFO] [stderr] 36 | |     namespaces: Vec<Box<Namespace>>,
[INFO] [stderr] 37 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]   --> src/lib.rs:5:9
[INFO] [stderr]    |
[INFO] [stderr] 5  | #![warn(missing_debug_implementations)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stderr]    --> src/context.rs:231:1
[INFO] [stderr]     |
[INFO] [stderr] 231 | pub struct Child(pid_t);
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stderr]   --> src/namespace/control_group.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub struct ControlGroup {}
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stderr]   --> src/namespace/ipc.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub struct Ipc {}
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stderr]   --> src/namespace/network.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub struct Network {}
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stderr]   --> src/namespace/pid.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub struct Pid {}
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stderr]   --> src/namespace/user.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | / pub struct User {
[INFO] [stderr] 32 | |     map_root_user: bool,
[INFO] [stderr] 33 | |     map_root_group: bool,
[INFO] [stderr] 34 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stderr]   --> src/namespace/uts.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub struct Uts {}
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for an associated function
[INFO] [stderr]   --> src/namespace/mod.rs:83:2
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn box_clone(&self) -> Box<Namespace>;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]   --> src/lib.rs:3:9
[INFO] [stderr]    |
[INFO] [stderr] 3  | #![warn(missing_docs)]
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `isolate` (lib) generated 28 warnings
[INFO] [stderr] warning: `isolate` (lib test) generated 27 warnings (27 duplicates)
[INFO] [stderr] warning: field is never read: `config`
[INFO] [stderr]    --> src/main.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     config: Configuration,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `isolate` (bin "isolate" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/isolate-3c8c393f47147535)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/isolate-4618717310f38d1d)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test default_config ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3e1516f7f778ee72cc882c297845afa165307968cb72900ed73c98b9ec41fb65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e1516f7f778ee72cc882c297845afa165307968cb72900ed73c98b9ec41fb65", kill_on_drop: false }`
[INFO] [stdout] 3e1516f7f778ee72cc882c297845afa165307968cb72900ed73c98b9ec41fb65