[INFO] updating cached 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" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c63d1d2e9a1eb18160a9ef16db10ed80cd6fd98
[INFO] testing cultural-technology/sunzi against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcultural-technology%2Fsunzi" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cultural-technology/sunzi on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cultural-technology/sunzi
[INFO] removed path dependency ff_derive from git repo https://github.com/cultural-technology/sunzi
[INFO] removed path dependency ff_derive from 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-1/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" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (ff_derive) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: dependency (ff_derive) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-1/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "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" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (ff_derive) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: dependency (ff_derive) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b4b7c1b6169d5c4307272b303c6b471c05af2ebcb1bd9095a4a23edb417ca3c
[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" "3b4b7c1b6169d5c4307272b303c6b471c05af2ebcb1bd9095a4a23edb417ca3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b4b7c1b6169d5c4307272b303c6b471c05af2ebcb1bd9095a4a23edb417ca3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b4b7c1b6169d5c4307272b303c6b471c05af2ebcb1bd9095a4a23edb417ca3c", kill_on_drop: false }`
[INFO] [stdout] 3b4b7c1b6169d5c4307272b303c6b471c05af2ebcb1bd9095a4a23edb417ca3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3e4355835643cba7e5218a36571c51dccfcf554f195e3f5dfb138a3dd5f0dd0
[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" "f3e4355835643cba7e5218a36571c51dccfcf554f195e3f5dfb138a3dd5f0dd0", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (ff_derive) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: dependency (ff_derive) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling unroll v0.1.4
[INFO] [stderr]    Compiling 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] 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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.19s
[INFO] running `Command { std: "docker" "inspect" "f3e4355835643cba7e5218a36571c51dccfcf554f195e3f5dfb138a3dd5f0dd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3e4355835643cba7e5218a36571c51dccfcf554f195e3f5dfb138a3dd5f0dd0", kill_on_drop: false }`
[INFO] [stdout] f3e4355835643cba7e5218a36571c51dccfcf554f195e3f5dfb138a3dd5f0dd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--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] 60fc5166dc41390115eecea54f4af2b1d03f287cf100e57a8fe3f5082c04713f
[INFO] running `Command { std: "docker" "start" "-a" "60fc5166dc41390115eecea54f4af2b1d03f287cf100e57a8fe3f5082c04713f", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (ff_derive) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: dependency (ff_derive) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling rand_xorshift v0.2.0
[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] [stderr]    Compiling ff_derive v0.6.0
[INFO] [stderr]    Compiling rcmath v0.0.2 (/opt/rustwide/workdir)
[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 type 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] 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`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "60fc5166dc41390115eecea54f4af2b1d03f287cf100e57a8fe3f5082c04713f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60fc5166dc41390115eecea54f4af2b1d03f287cf100e57a8fe3f5082c04713f", kill_on_drop: false }`
[INFO] [stdout] 60fc5166dc41390115eecea54f4af2b1d03f287cf100e57a8fe3f5082c04713f