[INFO] crate HorseShoe 0.0.1 is already in cache
[INFO] checking HorseShoe-0.0.1 against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] extracting crate HorseShoe 0.0.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate HorseShoe 0.0.1 on toolchain 0ab79c4b48ad19260fa46623f452c1b403a360e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate HorseShoe 0.0.1
[INFO] finished tweaking crates.io crate HorseShoe 0.0.1
[INFO] tweaked toml for crates.io crate HorseShoe 0.0.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "metadata" "--no-deps" "--format-version=1", 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] 0bc53908c2d3aaeb83e68ccaa1f316799ca5126e23c779ded01d83131c6e0bcb
[INFO] running `Command { std: "docker" "start" "-a" "0bc53908c2d3aaeb83e68ccaa1f316799ca5126e23c779ded01d83131c6e0bcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bc53908c2d3aaeb83e68ccaa1f316799ca5126e23c779ded01d83131c6e0bcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bc53908c2d3aaeb83e68ccaa1f316799ca5126e23c779ded01d83131c6e0bcb", kill_on_drop: false }`
[INFO] [stdout] 0bc53908c2d3aaeb83e68ccaa1f316799ca5126e23c779ded01d83131c6e0bcb
[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=forbid" "-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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "check" "--frozen" "--all" "--all-targets" "--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] 31f02838c2a19d7294f192e3a1f80e0d97576fddf475af2b9f4b0655085f8cd0
[INFO] running `Command { std: "docker" "start" "-a" "31f02838c2a19d7294f192e3a1f80e0d97576fddf475af2b9f4b0655085f8cd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking HorseShoe v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/numder.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn numder(z: Self, f: &Fn(Self) -> Self) -> Self {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Self) -> Self`
[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/numint.rs:41:37
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn numint(u: Self, l: Self, f: &Fn(Self) -> Self) -> Self {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Self) -> Self`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/numder.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn numder(z: Self, f: &Fn(Self) -> Self) -> Self {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Self) -> Self`
[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/numint.rs:41:37
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn numint(u: Self, l: Self, f: &Fn(Self) -> Self) -> Self {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Self) -> Self`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.91s
[INFO] running `Command { std: "docker" "inspect" "31f02838c2a19d7294f192e3a1f80e0d97576fddf475af2b9f4b0655085f8cd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31f02838c2a19d7294f192e3a1f80e0d97576fddf475af2b9f4b0655085f8cd0", kill_on_drop: false }`
[INFO] [stdout] 31f02838c2a19d7294f192e3a1f80e0d97576fddf475af2b9f4b0655085f8cd0