[INFO] fetching crate ff-uint 0.1.1...
[INFO] checking ff-uint-0.1.1 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] extracting crate ff-uint 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ff-uint 0.1.1 on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ff-uint 0.1.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ff-uint 0.1.1
[INFO] tweaked toml for crates.io crate ff-uint 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded concat-idents v1.0.0
[INFO] [stderr]   Downloaded ff-uint_derive v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77779f1cfc7aff9d2f68273e64c515e1ad5c7ae4b3b90c41a700598bdb8a5891
[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" "77779f1cfc7aff9d2f68273e64c515e1ad5c7ae4b3b90c41a700598bdb8a5891", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77779f1cfc7aff9d2f68273e64c515e1ad5c7ae4b3b90c41a700598bdb8a5891", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77779f1cfc7aff9d2f68273e64c515e1ad5c7ae4b3b90c41a700598bdb8a5891", kill_on_drop: false }`
[INFO] [stdout] 77779f1cfc7aff9d2f68273e64c515e1ad5c7ae4b3b90c41a700598bdb8a5891
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53b6a60d7880667cab7e1ced0ec794b423c36dd7e390eb36b72bcd380fd2479b
[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" "53b6a60d7880667cab7e1ced0ec794b423c36dd7e390eb36b72bcd380fd2479b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling borsh-schema-derive-internal v0.7.1
[INFO] [stderr]    Compiling borsh-derive-internal v0.7.1
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling borsh-derive v0.7.1
[INFO] [stderr]    Compiling ref-cast-impl v1.0.2
[INFO] [stderr]    Compiling concat-idents v1.0.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling ff-uint_derive v0.1.3
[INFO] [stderr]     Checking ref-cast v1.0.2
[INFO] [stderr]     Checking borsh v0.7.1
[INFO] [stderr]     Checking ff-uint v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `intra_doc_link_resolution_failure` has been renamed to `broken_intra_doc_links`
[INFO] [stdout]  --> src/ff/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![deny(intra_doc_link_resolution_failure)]
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `broken_intra_doc_links`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `intra_doc_link_resolution_failure` has been renamed to `broken_intra_doc_links`
[INFO] [stdout]  --> src/ff/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![deny(intra_doc_link_resolution_failure)]
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `broken_intra_doc_links`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` 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] [stdout] error[E0599]: no function or associated item named `new` found for struct `U256` in the current scope
[INFO] [stdout]   --> tests/ff-uint_tests.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | / construct_uint! {
[INFO] [stdout] 17 | |         pub struct U256(4);
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_- function or associated item `new` not found for this
[INFO] [stdout] ...
[INFO] [stdout] 26 | / construct_primefield_params! {
[INFO] [stdout] 27 | |     pub struct Fs(super::U256);
[INFO] [stdout] 28 | |
[INFO] [stdout] 29 | |     impl PrimeFieldParams for Fs {
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | |    }
[INFO] [stdout] 34 | | }
[INFO] [stdout]    | |_^ function or associated item not found in `U256`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]    = note: the following trait defines an item `new`, perhaps you need to implement it:
[INFO] [stdout]            candidate #1: `UniformSampler`
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ff-uint`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "53b6a60d7880667cab7e1ced0ec794b423c36dd7e390eb36b72bcd380fd2479b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53b6a60d7880667cab7e1ced0ec794b423c36dd7e390eb36b72bcd380fd2479b", kill_on_drop: false }`
[INFO] [stdout] 53b6a60d7880667cab7e1ced0ec794b423c36dd7e390eb36b72bcd380fd2479b