[INFO] cloning repository https://github.com/ZatchBo/json_io
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZatchBo/json_io" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZatchBo%2Fjson_io", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZatchBo%2Fjson_io'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0170e95a9113eb4616383c7238f70c33d494acc3
[INFO] testing ZatchBo/json_io against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZatchBo%2Fjson_io" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ZatchBo/json_io on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ZatchBo/json_io
[INFO] finished tweaking git repo https://github.com/ZatchBo/json_io
[INFO] tweaked toml for git repo https://github.com/ZatchBo/json_io written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ZatchBo/json_io already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b3fe879aca158799e0bcf92cdc7308f8d3d9905022925bb3538e1c941519c49
[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" "0b3fe879aca158799e0bcf92cdc7308f8d3d9905022925bb3538e1c941519c49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b3fe879aca158799e0bcf92cdc7308f8d3d9905022925bb3538e1c941519c49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b3fe879aca158799e0bcf92cdc7308f8d3d9905022925bb3538e1c941519c49", kill_on_drop: false }`
[INFO] [stdout] 0b3fe879aca158799e0bcf92cdc7308f8d3d9905022925bb3538e1c941519c49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--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] 334095a3830e61c85de19aea0de817a66e95434a2e6c22ad62777ac75339e15a
[INFO] running `Command { std: "docker" "start" "-a" "334095a3830e61c85de19aea0de817a66e95434a2e6c22ad62777ac75339e15a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling iter-read v0.2.1
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling chrono v0.4.9
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling serde-pickle v0.5.1
[INFO] [stderr]    Compiling json_io v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0405]: cannot find trait `Serialize` in this scope
[INFO] [stdout]    --> src/structs.rs:144:27
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn pickle_json<T: Serialize + DeserializeOwned>
[INFO] [stdout]     |                           ^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 144 |     use crate::structs::Serialize;
[INFO] [stdout]     |
[INFO] [stdout] 144 |     use serde::Serialize;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `DeserializeOwned` in this scope
[INFO] [stdout]    --> src/structs.rs:144:39
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn pickle_json<T: Serialize + DeserializeOwned>
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 144 |     use crate::structs::DeserializeOwned;
[INFO] [stdout]     |
[INFO] [stdout] 144 |     use serde::de::DeserializeOwned;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Serialize` in this scope
[INFO] [stdout]    --> src/structs.rs:166:29
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn depickle_json<T: Serialize + DeserializeOwned>
[INFO] [stdout]     |                             ^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 144 |     use crate::structs::Serialize;
[INFO] [stdout]     |
[INFO] [stdout] 144 |     use serde::Serialize;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `DeserializeOwned` in this scope
[INFO] [stdout]    --> src/structs.rs:166:41
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn depickle_json<T: Serialize + DeserializeOwned>
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 144 |     use crate::structs::DeserializeOwned;
[INFO] [stdout]     |
[INFO] [stdout] 144 |     use serde::de::DeserializeOwned;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::de::DeserializeOwned`
[INFO] [stdout]   --> src/structs.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use serde::de::DeserializeOwned;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json_io`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "334095a3830e61c85de19aea0de817a66e95434a2e6c22ad62777ac75339e15a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "334095a3830e61c85de19aea0de817a66e95434a2e6c22ad62777ac75339e15a", kill_on_drop: false }`
[INFO] [stdout] 334095a3830e61c85de19aea0de817a66e95434a2e6c22ad62777ac75339e15a