[INFO] updating cached repository https://github.com/neivv/scarf
[INFO] running `"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"`
[INFO] [stderr] From https://github.com/neivv/scarf
[INFO] [stderr]    aa34b5f..7a626b1  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7a626b1514b05a90f8ec662e594d7d2d17786eea
[INFO] checking neivv/scarf against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneivv%2Fscarf" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/neivv/scarf on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/neivv/scarf
[INFO] finished tweaking git repo https://github.com/neivv/scarf
[INFO] tweaked toml for git repo https://github.com/neivv/scarf written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/neivv/scarf already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 35c7290597ad7f69307e995228fb885b2b4cd4b54a36df0e1075311b8220b6a4
[INFO] running `"docker" "start" "-a" "35c7290597ad7f69307e995228fb885b2b4cd4b54a36df0e1075311b8220b6a4"`
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking lde v0.3.0 (https://github.com/CasualX/lde#6d8e2870)
[INFO] [stderr]    Compiling hashbrown v0.7.0
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking scarf v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `serde`
[INFO] [stderr]     --> src/operand.rs:1641:13
[INFO] [stderr]      |
[INFO] [stderr] 1641 |         use serde::de::DeserializeSeed;
[INFO] [stderr]      |             ^^^^^ use of undeclared type or module `serde`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `serde`
[INFO] [stderr]     --> src/operand.rs:1660:13
[INFO] [stderr]      |
[INFO] [stderr] 1660 |         use serde::de::DeserializeSeed;
[INFO] [stderr]      |             ^^^^^ use of undeclared type or module `serde`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `operand::Operand<'_>: serde::ser::Serialize` is not satisfied
[INFO] [stderr]     --> src/operand.rs:1652:42
[INFO] [stderr]      |
[INFO] [stderr] 1652 |         let json = serde_json::to_string(&op).unwrap();
[INFO] [stderr]      |                                          ^^^ the trait `serde::ser::Serialize` is not implemented for `operand::Operand<'_>`
[INFO] [stderr]      | 
[INFO] [stderr]     ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_json-1.0.48/src/ser.rs:2233:8
[INFO] [stderr]      |
[INFO] [stderr] 2233 |     T: Serialize,
[INFO] [stderr]      |        --------- required by this bound in `serde_json::ser::to_string`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `deserialize_seed` found for reference `&operand::OperandContext<'_>` in the current scope
[INFO] [stderr]     --> src/operand.rs:1654:36
[INFO] [stderr]      |
[INFO] [stderr] 1654 |         let op2: Operand<'_> = ctx.deserialize_seed().deserialize(&mut des).unwrap();
[INFO] [stderr]      |                                    ^^^^^^^^^^^^^^^^ method not found in `&operand::OperandContext<'_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `deserialize_seed` found for reference `&operand::OperandContext<'_>` in the current scope
[INFO] [stderr]     --> src/operand.rs:1710:36
[INFO] [stderr]      |
[INFO] [stderr] 1710 |         let op2: Operand<'_> = ctx.deserialize_seed().deserialize(&mut des).unwrap();
[INFO] [stderr]      |                                    ^^^^^^^^^^^^^^^^ method not found in `&operand::OperandContext<'_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `operand::Operand<'e>: serde::ser::Serialize` is not satisfied
[INFO] [stderr]  --> src/operand/simplify_tests.rs:5:34
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let bytes = config.serialize(&op).unwrap();
[INFO] [stderr]   |                                  ^^^ the trait `serde::ser::Serialize` is not implemented for `operand::Operand<'e>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `deserialize_seed` found for reference `&'e operand::OperandContext<'e>` in the current scope
[INFO] [stderr]  --> src/operand/simplify_tests.rs:6:57
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let back: Operand<'e> = config.deserialize_seed(ctx.deserialize_seed(), &bytes).unwrap();
[INFO] [stderr]   |                                                         ^^^^^^^^^^^^^^^^ method not found in `&'e operand::OperandContext<'e>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 7 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `scarf`.
[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 `"docker" "inspect" "35c7290597ad7f69307e995228fb885b2b4cd4b54a36df0e1075311b8220b6a4"`
[INFO] running `"docker" "rm" "-f" "35c7290597ad7f69307e995228fb885b2b4cd4b54a36df0e1075311b8220b6a4"`
[INFO] [stdout] 35c7290597ad7f69307e995228fb885b2b4cd4b54a36df0e1075311b8220b6a4