[INFO] updating cached repository https://github.com/crumblingstatue/wct
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 21f3150cf65484b2cb01200e2821d5fdf628596b
[INFO] testing crumblingstatue/wct against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrumblingstatue%2Fwct" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/crumblingstatue/wct on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/crumblingstatue/wct
[INFO] finished tweaking git repo https://github.com/crumblingstatue/wct
[INFO] tweaked toml for git repo https://github.com/crumblingstatue/wct written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/crumblingstatue/wct already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3ab9c0f09da5d699c473bd0873030512202e93d6e03d10d6d30f4b2345c049f
[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" "c3ab9c0f09da5d699c473bd0873030512202e93d6e03d10d6d30f4b2345c049f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3ab9c0f09da5d699c473bd0873030512202e93d6e03d10d6d30f4b2345c049f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ab9c0f09da5d699c473bd0873030512202e93d6e03d10d6d30f4b2345c049f", kill_on_drop: false }`
[INFO] [stdout] c3ab9c0f09da5d699c473bd0873030512202e93d6e03d10d6d30f4b2345c049f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb13df19e8af1f7977ace3bafa0b14bb9333d545b5cea5631abf7479df3e2da5
[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" "fb13df19e8af1f7977ace3bafa0b14bb9333d545b5cea5631abf7479df3e2da5", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.81
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling rand_xorshift v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling serde_derive v1.0.81
[INFO] [stderr]    Compiling bincode v1.0.1
[INFO] [stderr]    Compiling wct v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:22:73
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn parse_args(mut args: impl Iterator<Item = String>) -> Result<Op, Box<Error>> {
[INFO] [stdout]    |                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[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/main.rs:75:54
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn from_path(path: &str) -> Result<Self, Box<Error>> {
[INFO] [stdout]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:79:62
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn save_to_path(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:84:46
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn good(&mut self) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:88:45
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn bad(&mut self) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:93:54
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn revert(&mut self, n: usize) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:110:66
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn corrupt_random(&mut self, times: usize) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:131:43
[INFO] [stdout]     |
[INFO] [stdout] 131 |     fn reset(&mut self) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:137:50
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn save(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:142:55
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn apply(&mut self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:178:21
[INFO] [stdout]     |
[INFO] [stdout] 178 | ) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:205:29
[INFO] [stdout]     |
[INFO] [stdout] 205 | fn main() -> Result<(), Box<Error>> {
[INFO] [stdout]     |                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.68s
[INFO] running `Command { std: "docker" "inspect" "fb13df19e8af1f7977ace3bafa0b14bb9333d545b5cea5631abf7479df3e2da5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb13df19e8af1f7977ace3bafa0b14bb9333d545b5cea5631abf7479df3e2da5", kill_on_drop: false }`
[INFO] [stdout] fb13df19e8af1f7977ace3bafa0b14bb9333d545b5cea5631abf7479df3e2da5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf8148c5f18256af1ba9f0f07b871f4a200ea5d6f022bace0fb6b6cd25b65e00
[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" "bf8148c5f18256af1ba9f0f07b871f4a200ea5d6f022bace0fb6b6cd25b65e00", kill_on_drop: false }`
[INFO] [stderr]    Compiling wct v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:22:73
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn parse_args(mut args: impl Iterator<Item = String>) -> Result<Op, Box<Error>> {
[INFO] [stdout]    |                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[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/main.rs:75:54
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn from_path(path: &str) -> Result<Self, Box<Error>> {
[INFO] [stdout]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:79:62
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn save_to_path(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:84:46
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn good(&mut self) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:88:45
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn bad(&mut self) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:93:54
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn revert(&mut self, n: usize) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:110:66
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn corrupt_random(&mut self, times: usize) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:131:43
[INFO] [stdout]     |
[INFO] [stdout] 131 |     fn reset(&mut self) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:137:50
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn save(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:142:55
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn apply(&mut self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:178:21
[INFO] [stdout]     |
[INFO] [stdout] 178 | ) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:205:29
[INFO] [stdout]     |
[INFO] [stdout] 205 | fn main() -> Result<(), Box<Error>> {
[INFO] [stdout]     |                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "bf8148c5f18256af1ba9f0f07b871f4a200ea5d6f022bace0fb6b6cd25b65e00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf8148c5f18256af1ba9f0f07b871f4a200ea5d6f022bace0fb6b6cd25b65e00", kill_on_drop: false }`
[INFO] [stdout] bf8148c5f18256af1ba9f0f07b871f4a200ea5d6f022bace0fb6b6cd25b65e00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 235d904dcae6db6b9f98c988a962c5ec2c95bdde5c0fb61ed197312c05756383
[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" "235d904dcae6db6b9f98c988a962c5ec2c95bdde5c0fb61ed197312c05756383", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:22:73
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn parse_args(mut args: impl Iterator<Item = String>) -> Result<Op, Box<Error>> {
[INFO] [stderr]    |                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[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/main.rs:75:54
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn from_path(path: &str) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:79:62
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn save_to_path(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:84:46
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn good(&mut self) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:88:45
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub fn bad(&mut self) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:93:54
[INFO] [stderr]    |
[INFO] [stderr] 93 |     fn revert(&mut self, n: usize) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:110:66
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn corrupt_random(&mut self, times: usize) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:131:43
[INFO] [stderr]     |
[INFO] [stderr] 131 |     fn reset(&mut self) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:137:50
[INFO] [stderr]     |
[INFO] [stderr] 137 |     fn save(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:142:55
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn apply(&mut self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:178:21
[INFO] [stderr]     |
[INFO] [stderr] 178 | ) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:205:29
[INFO] [stderr]     |
[INFO] [stderr] 205 | fn main() -> Result<(), Box<Error>> {
[INFO] [stderr]     |                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/wct-eac7749ca7fafa58
[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" "235d904dcae6db6b9f98c988a962c5ec2c95bdde5c0fb61ed197312c05756383", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "235d904dcae6db6b9f98c988a962c5ec2c95bdde5c0fb61ed197312c05756383", kill_on_drop: false }`
[INFO] [stdout] 235d904dcae6db6b9f98c988a962c5ec2c95bdde5c0fb61ed197312c05756383