[INFO] cloning repository https://github.com/Isaac-Lozano/um-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Isaac-Lozano/um-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIsaac-Lozano%2Fum-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIsaac-Lozano%2Fum-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54183eeb66bf05b8a9c305425716d2c4c824a369
[INFO] testing Isaac-Lozano/um-rust against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIsaac-Lozano%2Fum-rust" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Isaac-Lozano/um-rust on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Isaac-Lozano/um-rust
[INFO] finished tweaking git repo https://github.com/Isaac-Lozano/um-rust
[INFO] tweaked toml for git repo https://github.com/Isaac-Lozano/um-rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Isaac-Lozano/um-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42f3573b1c912c65b13f2f6b96d600bbbef73f0d74fdbb4531131ef0c061eed2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "42f3573b1c912c65b13f2f6b96d600bbbef73f0d74fdbb4531131ef0c061eed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42f3573b1c912c65b13f2f6b96d600bbbef73f0d74fdbb4531131ef0c061eed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42f3573b1c912c65b13f2f6b96d600bbbef73f0d74fdbb4531131ef0c061eed2", kill_on_drop: false }`
[INFO] [stdout] 42f3573b1c912c65b13f2f6b96d600bbbef73f0d74fdbb4531131ef0c061eed2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 499274aa3f1ac12bcf736884b7399adff32a63d5915e96db277409f2a1daae34
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "499274aa3f1ac12bcf736884b7399adff32a63d5915e96db277409f2a1daae34", kill_on_drop: false }`
[INFO] [stderr]    Compiling um v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/um.rs:152:24
[INFO] [stdout]     |
[INFO] [stdout] 152 |         let operator = try!(self.zero
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/um.rs:235:28
[INFO] [stdout]     |
[INFO] [stdout] 235 |             self.regs[a] = try!(self.zero.get(self.regs[c] as usize).ok_or(UmError::InvalidArrayAccess)).clone();
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/um.rs:239:28
[INFO] [stdout]     |
[INFO] [stdout] 239 |             self.regs[a] = try!(self.arrays
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/um.rs:258:14
[INFO] [stdout]     |
[INFO] [stdout] 258 |             *try!(self.arrays
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/um.rs:363:25
[INFO] [stdout]     |
[INFO] [stdout] 363 |             self.zero = try!(self.arrays
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let len = try!(file.read(&mut buf));
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/um.rs:7:36
[INFO] [stdout]   |
[INFO] [stdout] 7 | const OP_FUNCTION_TABLE: [&'static Fn(&mut Um, usize, usize, usize, u32) -> UmResult<bool>; 14] =
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Um, usize, usize, usize, u32) -> UmResult<bool>`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/um.rs:104:32
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn cause(&self) -> Option<&Error>
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[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/main.rs:69:82
[INFO] [stdout]    |
[INFO] [stdout] 69 |             writeln!(&mut std::io::stderr(), "{}: {}: {}", progname, filename, e.description()).unwrap();
[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/main.rs:78:26
[INFO] [stdout]    |
[INFO] [stdout] 78 |         Err(e) => barf(e.description()),
[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/main.rs:98:41
[INFO] [stdout]    |
[INFO] [stdout] 98 |                 println!("Error: {}", e.description());
[INFO] [stdout]    |                                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "499274aa3f1ac12bcf736884b7399adff32a63d5915e96db277409f2a1daae34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "499274aa3f1ac12bcf736884b7399adff32a63d5915e96db277409f2a1daae34", kill_on_drop: false }`
[INFO] [stdout] 499274aa3f1ac12bcf736884b7399adff32a63d5915e96db277409f2a1daae34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fcb8602f2cfac659cd9e76cebf9c5255f6253646a8013bb5b49107bb9cb6cc41
[INFO] running `Command { std: "docker" "start" "-a" "fcb8602f2cfac659cd9e76cebf9c5255f6253646a8013bb5b49107bb9cb6cc41", kill_on_drop: false }`
[INFO] [stderr]    Compiling um v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/um.rs:152:24
[INFO] [stdout]     |
[INFO] [stdout] 152 |         let operator = try!(self.zero
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/um.rs:235:28
[INFO] [stdout]     |
[INFO] [stdout] 235 |             self.regs[a] = try!(self.zero.get(self.regs[c] as usize).ok_or(UmError::InvalidArrayAccess)).clone();
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/um.rs:239:28
[INFO] [stdout]     |
[INFO] [stdout] 239 |             self.regs[a] = try!(self.arrays
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/um.rs:258:14
[INFO] [stdout]     |
[INFO] [stdout] 258 |             *try!(self.arrays
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/um.rs:363:25
[INFO] [stdout]     |
[INFO] [stdout] 363 |             self.zero = try!(self.arrays
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let len = try!(file.read(&mut buf));
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/um.rs:7:36
[INFO] [stdout]   |
[INFO] [stdout] 7 | const OP_FUNCTION_TABLE: [&'static Fn(&mut Um, usize, usize, usize, u32) -> UmResult<bool>; 14] =
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Um, usize, usize, usize, u32) -> UmResult<bool>`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/um.rs:104:32
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn cause(&self) -> Option<&Error>
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[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/main.rs:69:82
[INFO] [stdout]    |
[INFO] [stdout] 69 |             writeln!(&mut std::io::stderr(), "{}: {}: {}", progname, filename, e.description()).unwrap();
[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/main.rs:78:26
[INFO] [stdout]    |
[INFO] [stdout] 78 |         Err(e) => barf(e.description()),
[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/main.rs:98:41
[INFO] [stdout]    |
[INFO] [stdout] 98 |                 println!("Error: {}", e.description());
[INFO] [stdout]    |                                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "fcb8602f2cfac659cd9e76cebf9c5255f6253646a8013bb5b49107bb9cb6cc41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcb8602f2cfac659cd9e76cebf9c5255f6253646a8013bb5b49107bb9cb6cc41", kill_on_drop: false }`
[INFO] [stdout] fcb8602f2cfac659cd9e76cebf9c5255f6253646a8013bb5b49107bb9cb6cc41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 100ffbd685fc6cde62c7513f56231a16a1fd2738bea4bef3dfcfe5a5d2e676f6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "100ffbd685fc6cde62c7513f56231a16a1fd2738bea4bef3dfcfe5a5d2e676f6", 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/um.rs:152:24
[INFO] [stderr]     |
[INFO] [stderr] 152 |         let operator = try!(self.zero
[INFO] [stderr]     |                        ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/um.rs:235:28
[INFO] [stderr]     |
[INFO] [stderr] 235 |             self.regs[a] = try!(self.zero.get(self.regs[c] as usize).ok_or(UmError::InvalidArrayAccess)).clone();
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/um.rs:239:28
[INFO] [stderr]     |
[INFO] [stderr] 239 |             self.regs[a] = try!(self.arrays
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/um.rs:258:14
[INFO] [stderr]     |
[INFO] [stderr] 258 |             *try!(self.arrays
[INFO] [stderr]     |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/um.rs:363:25
[INFO] [stderr]     |
[INFO] [stderr] 363 |             self.zero = try!(self.arrays
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:24:19
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let len = try!(file.read(&mut buf));
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/um.rs:7:36
[INFO] [stderr]   |
[INFO] [stderr] 7 | const OP_FUNCTION_TABLE: [&'static Fn(&mut Um, usize, usize, usize, u32) -> UmResult<bool>; 14] =
[INFO] [stderr]   |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Um, usize, usize, usize, u32) -> UmResult<bool>`
[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/um.rs:104:32
[INFO] [stderr]     |
[INFO] [stderr] 104 |     fn cause(&self) -> Option<&Error>
[INFO] [stderr]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:69:82
[INFO] [stderr]    |
[INFO] [stderr] 69 |             writeln!(&mut std::io::stderr(), "{}: {}: {}", progname, filename, e.description()).unwrap();
[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/main.rs:78:26
[INFO] [stderr]    |
[INFO] [stderr] 78 |         Err(e) => barf(e.description()),
[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/main.rs:98:41
[INFO] [stderr]    |
[INFO] [stderr] 98 |                 println!("Error: {}", e.description());
[INFO] [stderr]    |                                         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.96s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/um-cc313dabb4d08149
[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 `Command { std: "docker" "inspect" "100ffbd685fc6cde62c7513f56231a16a1fd2738bea4bef3dfcfe5a5d2e676f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "100ffbd685fc6cde62c7513f56231a16a1fd2738bea4bef3dfcfe5a5d2e676f6", kill_on_drop: false }`
[INFO] [stdout] 100ffbd685fc6cde62c7513f56231a16a1fd2738bea4bef3dfcfe5a5d2e676f6
