[INFO] fetching crate small-sorted-map 0.0.1-alpha.4...
[INFO] testing small-sorted-map-0.0.1-alpha.4 against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739-1
[INFO] extracting crate small-sorted-map 0.0.1-alpha.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate small-sorted-map 0.0.1-alpha.4
[INFO] finished tweaking crates.io crate small-sorted-map 0.0.1-alpha.4
[INFO] tweaked toml for crates.io crate small-sorted-map 0.0.1-alpha.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate small-sorted-map 0.0.1-alpha.4 on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "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" "+33835004928d3bf65db4d4712e1330766263b0bd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a1cb8643401fc8486efda509b1ba9de71ab4d57feb2ff7796eee4e66ec09ea2
[INFO] running `Command { std: "docker" "start" "-a" "9a1cb8643401fc8486efda509b1ba9de71ab4d57feb2ff7796eee4e66ec09ea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a1cb8643401fc8486efda509b1ba9de71ab4d57feb2ff7796eee4e66ec09ea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a1cb8643401fc8486efda509b1ba9de71ab4d57feb2ff7796eee4e66ec09ea2", kill_on_drop: false }`
[INFO] [stdout] 9a1cb8643401fc8486efda509b1ba9de71ab4d57feb2ff7796eee4e66ec09ea2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77e219c5e200f8e529ccc7d3dcbe97dbb9252d98eb18dc28da03a1feeb1c462a
[INFO] running `Command { std: "docker" "start" "-a" "77e219c5e200f8e529ccc7d3dcbe97dbb9252d98eb18dc28da03a1feeb1c462a", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling small-sorted-map v0.0.1-alpha.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::default::default`
[INFO] [stdout]  --> src/map/serde.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{any::type_name, default::default, fmt::Formatter, iter, marker::PhantomData};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^ no `default` in `default`
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider importing this module instead:
[INFO] [stdout]           std::default
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 1 - use std::{any::type_name, default::default, fmt::Formatter, iter, marker::PhantomData};
[INFO] [stdout] 1 + use std::{any::type_name, default::Default, fmt::Formatter, iter, marker::PhantomData};
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `result_into_ok_or_err`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(result_into_ok_or_err, default_free_fn)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `default_free_fn`
[INFO] [stdout]  --> src/lib.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(result_into_ok_or_err, default_free_fn)]
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `into_ok_or_err` found for enum `Result<T, E>` in the current scope
[INFO] [stdout]   --> src/map/mod.rs:98:22
[INFO] [stdout]    |
[INFO] [stdout] 98 |             pos: pos.into_ok_or_err(),
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^ method not found in `Result<usize, usize>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `small-sorted-map` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "77e219c5e200f8e529ccc7d3dcbe97dbb9252d98eb18dc28da03a1feeb1c462a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77e219c5e200f8e529ccc7d3dcbe97dbb9252d98eb18dc28da03a1feeb1c462a", kill_on_drop: false }`
[INFO] [stdout] 77e219c5e200f8e529ccc7d3dcbe97dbb9252d98eb18dc28da03a1feeb1c462a
