[INFO] cloning repository https://github.com/cultural-technology/sunzi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cultural-technology/sunzi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcultural-technology%2Fsunzi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcultural-technology%2Fsunzi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c63d1d2e9a1eb18160a9ef16db10ed80cd6fd98
[INFO] checking cultural-technology/sunzi against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcultural-technology%2Fsunzi" "/workspace/builds/worker-57/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-57/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cultural-technology/sunzi on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cultural-technology/sunzi
[INFO] finished tweaking git repo https://github.com/cultural-technology/sunzi
[INFO] tweaked toml for git repo https://github.com/cultural-technology/sunzi written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate git repo https://github.com/cultural-technology/sunzi already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b3d33fd5cc15a7b87d72a4b7be161db33d10680f4a33e6af77ee63c6198ada0
[INFO] running `Command { std: "docker" "start" "-a" "7b3d33fd5cc15a7b87d72a4b7be161db33d10680f4a33e6af77ee63c6198ada0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b3d33fd5cc15a7b87d72a4b7be161db33d10680f4a33e6af77ee63c6198ada0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b3d33fd5cc15a7b87d72a4b7be161db33d10680f4a33e6af77ee63c6198ada0", kill_on_drop: false }`
[INFO] [stdout] 7b3d33fd5cc15a7b87d72a4b7be161db33d10680f4a33e6af77ee63c6198ada0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1286980cfd5bf0a4c87d3f5932168b39218e895444f6c67fe001e16f2b7f978a
[INFO] running `Command { std: "docker" "start" "-a" "1286980cfd5bf0a4c87d3f5932168b39218e895444f6c67fe001e16f2b7f978a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ff_derive v0.1.0 (/opt/rustwide/workdir/ff_derive)
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling unroll v0.1.4
[INFO] [stderr]     Checking rcmath v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `serde`
[INFO] [stdout]  --> src/uint/tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |     ^^^^^ use of undeclared crate or module `serde`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `adc`
[INFO] [stdout]    --> src/uint/mod.rs:105:19
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub(crate) fn adc(a: u64, b: u64, carry: &mut u64) -> u64 {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sbb`
[INFO] [stdout]    --> src/uint/mod.rs:116:19
[INFO] [stdout]     |
[INFO] [stdout] 116 |     pub(crate) fn sbb(a: u64, b: u64, borrow: &mut u64) -> u64 {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mac_with_carry`
[INFO] [stdout]    --> src/uint/mod.rs:127:19
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub(crate) fn mac_with_carry(a: u64, b: u64, c: u64, carry: &mut u64) -> u64 {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mac`
[INFO] [stdout]    --> src/uint/mod.rs:136:19
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub(crate) fn mac(a: u64, b: u64, c: u64, carry: &mut u64) -> u64 {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mac_discard`
[INFO] [stdout]    --> src/uint/mod.rs:145:19
[INFO] [stdout]     |
[INFO] [stdout] 145 |     pub(crate) fn mac_discard(a: u64, b: u64, c: u64, carry: &mut u64) {
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/utils.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new(t: E) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rcmath` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "1286980cfd5bf0a4c87d3f5932168b39218e895444f6c67fe001e16f2b7f978a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1286980cfd5bf0a4c87d3f5932168b39218e895444f6c67fe001e16f2b7f978a", kill_on_drop: false }`
[INFO] [stdout] 1286980cfd5bf0a4c87d3f5932168b39218e895444f6c67fe001e16f2b7f978a