[INFO] cloning repository https://github.com/jflc/rug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jflc/rug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjflc%2Frug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjflc%2Frug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 44d17c7d1503f891365a04a74ccbdb2fd9dcc200
[INFO] checking jflc/rug against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjflc%2Frug" "/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/jflc/rug on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jflc/rug
[INFO] finished tweaking git repo https://github.com/jflc/rug
[INFO] tweaked toml for git repo https://github.com/jflc/rug written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jflc/rug already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da80b2a2b4f87ad3e7d7ad66ffc96054f2b553f3f7548fd0008052b8e62d6b02
[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" "da80b2a2b4f87ad3e7d7ad66ffc96054f2b553f3f7548fd0008052b8e62d6b02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da80b2a2b4f87ad3e7d7ad66ffc96054f2b553f3f7548fd0008052b8e62d6b02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da80b2a2b4f87ad3e7d7ad66ffc96054f2b553f3f7548fd0008052b8e62d6b02", kill_on_drop: false }`
[INFO] [stdout] da80b2a2b4f87ad3e7d7ad66ffc96054f2b553f3f7548fd0008052b8e62d6b02
[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=forbid" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 181ec74fc6d98a5f3891d964f10d0a6b8b06b216c6471446963ddac8ae8fe048
[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" "181ec74fc6d98a5f3891d964f10d0a6b8b06b216c6471446963ddac8ae8fe048", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]     Checking rug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/generator/aux_generator.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     rng: Box<RngCore>
[INFO] [stdout]   |              ^^^^^^^ help: use `dyn`: `dyn RngCore`
[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/generator/range_generator.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     rng: Box<RngCore>
[INFO] [stdout]   |              ^^^^^^^ help: use `dyn`: `dyn RngCore`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/generator/choose_generator.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     rng: Box<RngCore>
[INFO] [stdout]   |              ^^^^^^^ help: use `dyn`: `dyn RngCore`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/generator/shuffle_generator.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     rng: Box<RngCore>
[INFO] [stdout]   |              ^^^^^^^ help: use `dyn`: `dyn RngCore`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/generator/swap_generator.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     rng: Box<RngCore>
[INFO] [stdout]   |              ^^^^^^^ help: use `dyn`: `dyn RngCore`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/generator/aux_generator.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     rng: Box<RngCore>
[INFO] [stdout]   |              ^^^^^^^ help: use `dyn`: `dyn RngCore`
[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/generator/range_generator.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     rng: Box<RngCore>
[INFO] [stdout]   |              ^^^^^^^ help: use `dyn`: `dyn RngCore`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/generator/choose_generator.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     rng: Box<RngCore>
[INFO] [stdout]   |              ^^^^^^^ help: use `dyn`: `dyn RngCore`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/generator/shuffle_generator.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     rng: Box<RngCore>
[INFO] [stdout]   |              ^^^^^^^ help: use `dyn`: `dyn RngCore`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/generator/swap_generator.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     rng: Box<RngCore>
[INFO] [stdout]   |              ^^^^^^^ help: use `dyn`: `dyn RngCore`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:26:39
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn create_generator(&self) -> Box<Generator> {
[INFO] [stdout]    |                                       ^^^^^^^^^ help: use `dyn`: `dyn Generator`
[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:26:39
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn create_generator(&self) -> Box<Generator> {
[INFO] [stdout]    |                                       ^^^^^^^^^ help: use `dyn`: `dyn Generator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.81s
[INFO] running `Command { std: "docker" "inspect" "181ec74fc6d98a5f3891d964f10d0a6b8b06b216c6471446963ddac8ae8fe048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "181ec74fc6d98a5f3891d964f10d0a6b8b06b216c6471446963ddac8ae8fe048", kill_on_drop: false }`
[INFO] [stdout] 181ec74fc6d98a5f3891d964f10d0a6b8b06b216c6471446963ddac8ae8fe048