[INFO] fetching crate platform-treesmethods 0.1.0-aplha.2...
[INFO] testing platform-treesmethods-0.1.0-aplha.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate platform-treesmethods 0.1.0-aplha.2 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate platform-treesmethods 0.1.0-aplha.2
[INFO] finished tweaking crates.io crate platform-treesmethods 0.1.0-aplha.2
[INFO] tweaked toml for crates.io crate platform-treesmethods 0.1.0-aplha.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate platform-treesmethods 0.1.0-aplha.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded platform-num v0.1.0-aplha.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ec6f43971720108340ffa991837afbe8f2738a771a7b2e15e439c41e1893e43
[INFO] running `Command { std: "docker" "start" "-a" "4ec6f43971720108340ffa991837afbe8f2738a771a7b2e15e439c41e1893e43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ec6f43971720108340ffa991837afbe8f2738a771a7b2e15e439c41e1893e43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ec6f43971720108340ffa991837afbe8f2738a771a7b2e15e439c41e1893e43", kill_on_drop: false }`
[INFO] [stdout] 4ec6f43971720108340ffa991837afbe8f2738a771a7b2e15e439c41e1893e43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3e7fc18e447bcba1381e44b1d047b76cc96625b09834f5a7e2ac481a8aa1ef1
[INFO] running `Command { std: "docker" "start" "-a" "b3e7fc18e447bcba1381e44b1d047b76cc96625b09834f5a7e2ac481a8aa1ef1", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling platform-num v0.1.0-aplha.1
[INFO] [stderr]    Compiling platform-treesmethods v0.1.0-aplha.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::default::default`
[INFO] [stdout]  --> src/trees/no_recur_szb_tree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::default::default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^ no `default` in `default`
[INFO] [stdout]   |
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 1 - use std::default::default;
[INFO] [stdout] 1 + use std::default::Default;
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this module instead
[INFO] [stdout]   |
[INFO] [stdout] 1 - use std::default::default;
[INFO] [stdout] 1 + use std::default;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `default_free_fn`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(default_free_fn)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `platform-treesmethods` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b3e7fc18e447bcba1381e44b1d047b76cc96625b09834f5a7e2ac481a8aa1ef1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3e7fc18e447bcba1381e44b1d047b76cc96625b09834f5a7e2ac481a8aa1ef1", kill_on_drop: false }`
[INFO] [stdout] b3e7fc18e447bcba1381e44b1d047b76cc96625b09834f5a7e2ac481a8aa1ef1