[INFO] fetching crate serde-value-flatten 0.1.0...
[INFO] testing serde-value-flatten-0.1.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate serde-value-flatten 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde-value-flatten 0.1.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-value-flatten 0.1.0
[INFO] finished tweaking crates.io crate serde-value-flatten 0.1.0
[INFO] tweaked toml for crates.io crate serde-value-flatten 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8234134f7450d9b2146e6466b3877d786b323124ff18ecb4e09f856a7c06efc6
[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" "8234134f7450d9b2146e6466b3877d786b323124ff18ecb4e09f856a7c06efc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8234134f7450d9b2146e6466b3877d786b323124ff18ecb4e09f856a7c06efc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8234134f7450d9b2146e6466b3877d786b323124ff18ecb4e09f856a7c06efc6", kill_on_drop: false }`
[INFO] [stdout] 8234134f7450d9b2146e6466b3877d786b323124ff18ecb4e09f856a7c06efc6
[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=warn" "-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" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fdfbda3149c89e9ee4947e58cdf1a9f7b4f7eff7b4323e6423621a099bfd58e
[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" "6fdfbda3149c89e9ee4947e58cdf1a9f7b4f7eff7b4323e6423621a099bfd58e", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling ordered-float v1.1.0
[INFO] [stderr]    Compiling serde-value v0.6.0
[INFO] [stderr]    Compiling serde-value-flatten v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.11s
[INFO] running `Command { std: "docker" "inspect" "6fdfbda3149c89e9ee4947e58cdf1a9f7b4f7eff7b4323e6423621a099bfd58e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fdfbda3149c89e9ee4947e58cdf1a9f7b4f7eff7b4323e6423621a099bfd58e", kill_on_drop: false }`
[INFO] [stdout] 6fdfbda3149c89e9ee4947e58cdf1a9f7b4f7eff7b4323e6423621a099bfd58e
[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=warn" "-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" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfbc359fcdf6e66345e56041d4451a612c69659083e4b68d59fd1f1cdbbabca7
[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" "cfbc359fcdf6e66345e56041d4451a612c69659083e4b68d59fd1f1cdbbabca7", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling serde-value-flatten v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "cfbc359fcdf6e66345e56041d4451a612c69659083e4b68d59fd1f1cdbbabca7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfbc359fcdf6e66345e56041d4451a612c69659083e4b68d59fd1f1cdbbabca7", kill_on_drop: false }`
[INFO] [stdout] cfbc359fcdf6e66345e56041d4451a612c69659083e4b68d59fd1f1cdbbabca7
[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=warn" "-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" "+1.47.0" "test" "--frozen", 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] 0233479449c24133900450c9b872cb9539632ec8b4f02f790565f422b999ea76
[INFO] running `Command { std: "docker" "start" "-a" "0233479449c24133900450c9b872cb9539632ec8b4f02f790565f422b999ea76", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde_value_flatten-770e9df8d5ff1077
[INFO] [stderr]    Doc-tests serde-value-flatten
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 32) ... FAILED
[INFO] [stdout] test src/lib.rs - to_flatten_maptree (line 115) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 32) stdout ----
[INFO] [stdout] error: cannot find derive macro `Serialize` in this scope
[INFO] [stdout]  --> src/lib.rs:33:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Serialize, Clone, Debug)]
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: cannot find derive macro `Serialize` in this scope
[INFO] [stdout]  --> src/lib.rs:39:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[derive(Serialize, Clone, Debug)]
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stdout]   --> src/lib.rs:51:20
[INFO] [stdout]    |
[INFO] [stdout] 21 |     println!("{}", serde_json::to_string_pretty(&ser).unwrap());
[INFO] [stdout]    |                    ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Foo: serde::ser::Serialize` is not satisfied
[INFO] [stdout]    --> src/lib.rs:49:71
[INFO] [stdout]     |
[INFO] [stdout] 19  |     let ser = serde_value_flatten::to_flatten_maptree("_", Some("_"), &foo).unwrap();
[INFO] [stdout]     |                                                                       ^^^^ the trait `serde::ser::Serialize` is not implemented for `Foo`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:149:14
[INFO] [stdout]     |
[INFO] [stdout] 149 |     where T: serde::Serialize {
[INFO] [stdout]     |              ---------------- required by this bound in `serde_value_flatten::to_flatten_maptree`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - to_flatten_maptree (line 115) stdout ----
[INFO] [stdout] error: cannot find derive macro `Serialize` in this scope
[INFO] [stdout]  --> src/lib.rs:116:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Serialize, Clone, Debug)]
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: cannot find derive macro `Serialize` in this scope
[INFO] [stdout]  --> src/lib.rs:122:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[derive(Serialize, Clone, Debug)]
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stdout]   --> src/lib.rs:134:20
[INFO] [stdout]    |
[INFO] [stdout] 21 |     println!("{}", serde_json::to_string_pretty(&ser).unwrap());
[INFO] [stdout]    |                    ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Foo: serde::ser::Serialize` is not satisfied
[INFO] [stdout]    --> src/lib.rs:132:66
[INFO] [stdout]     |
[INFO] [stdout] 19  |     let ser = serde_value_flatten::to_flatten_maptree("|", None, &foo).unwrap();
[INFO] [stdout]     |                                                                  ^^^^ the trait `serde::ser::Serialize` is not implemented for `Foo`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:149:14
[INFO] [stdout]     |
[INFO] [stdout] 149 |     where T: serde::Serialize {
[INFO] [stdout]     |              ---------------- required by this bound in `serde_value_flatten::to_flatten_maptree`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 32)
[INFO] [stdout]     src/lib.rs - to_flatten_maptree (line 115)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "0233479449c24133900450c9b872cb9539632ec8b4f02f790565f422b999ea76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0233479449c24133900450c9b872cb9539632ec8b4f02f790565f422b999ea76", kill_on_drop: false }`
[INFO] [stdout] 0233479449c24133900450c9b872cb9539632ec8b4f02f790565f422b999ea76
