[INFO] fetching crate serde-value-flatten 0.1.0...
[INFO] testing serde-value-flatten-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate serde-value-flatten 0.1.0 into /workspace/builds/worker-5-tc1/source
[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-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde-value-flatten 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] [stderr]       Adding serde-value v0.6.0 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde-value v0.6.0
[INFO] [stderr]   Downloaded ordered-float v1.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94581e05233e9da91278e8db4eaa6d98dbcfe9bfb08072deb7f05bb155bb3c16
[INFO] running `Command { std: "docker" "start" "-a" "94581e05233e9da91278e8db4eaa6d98dbcfe9bfb08072deb7f05bb155bb3c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94581e05233e9da91278e8db4eaa6d98dbcfe9bfb08072deb7f05bb155bb3c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94581e05233e9da91278e8db4eaa6d98dbcfe9bfb08072deb7f05bb155bb3c16", kill_on_drop: false }`
[INFO] [stdout] 94581e05233e9da91278e8db4eaa6d98dbcfe9bfb08072deb7f05bb155bb3c16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c9b66e0244e819c9fe1c879c55e4480f9c92676e1147ed162572846f516654d
[INFO] running `Command { std: "docker" "start" "-a" "4c9b66e0244e819c9fe1c879c55e4480f9c92676e1147ed162572846f516654d", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling serde-value v0.6.0
[INFO] [stderr]    Compiling serde-value-flatten v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `Command { std: "docker" "inspect" "4c9b66e0244e819c9fe1c879c55e4480f9c92676e1147ed162572846f516654d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c9b66e0244e819c9fe1c879c55e4480f9c92676e1147ed162572846f516654d", kill_on_drop: false }`
[INFO] [stdout] 4c9b66e0244e819c9fe1c879c55e4480f9c92676e1147ed162572846f516654d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] caa74106b94fdf172823cb296cdd202ac5ae7144f4c2a93dd426b7da2fac264e
[INFO] running `Command { std: "docker" "start" "-a" "caa74106b94fdf172823cb296cdd202ac5ae7144f4c2a93dd426b7da2fac264e", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling serde-value-flatten v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "caa74106b94fdf172823cb296cdd202ac5ae7144f4c2a93dd426b7da2fac264e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caa74106b94fdf172823cb296cdd202ac5ae7144f4c2a93dd426b7da2fac264e", kill_on_drop: false }`
[INFO] [stdout] caa74106b94fdf172823cb296cdd202ac5ae7144f4c2a93dd426b7da2fac264e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ab6e379f053ceec133667b67c462efcc6c869c635428a677c8e92bceaf7a51b5
[INFO] running `Command { std: "docker" "start" "-a" "ab6e379f053ceec133667b67c462efcc6c869c635428a677c8e92bceaf7a51b5", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serde_value_flatten-ce03cf6cdf8262bf)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_value_flatten
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - to_flatten_maptree (line 115) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 32) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[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:117:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[derive(Serialize, Clone, Debug)]
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: cannot find derive macro `Serialize` in this scope
[INFO] [stdout]   --> src/lib.rs:123:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[derive(Serialize, Clone, Debug)]
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Foo: serde::Serialize` is not satisfied
[INFO] [stdout]    --> src/lib.rs:133:66
[INFO] [stdout]     |
[INFO] [stdout]  20 |     let ser = serde_value_flatten::to_flatten_maptree("|", None, &foo).unwrap();
[INFO] [stdout]     |               ---------------------------------------            ^^^^ the trait `serde_core::ser::Serialize` is not implemented for `Foo`
[INFO] [stdout]     |               |
[INFO] [stdout]     |               required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: for local types consider adding `#[derive(serde::Serialize)]` to your `Foo` type
[INFO] [stdout]     = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]     = help: the following other types implement trait `serde_core::ser::Serialize`:
[INFO] [stdout]               &'a T
[INFO] [stdout]               &'a mut T
[INFO] [stdout]               ()
[INFO] [stdout]               (T,)
[INFO] [stdout]               (T0, T1)
[INFO] [stdout]               (T0, T1, T2)
[INFO] [stdout]               (T0, T1, T2, T3)
[INFO] [stdout]               (T0, T1, T2, T3, T4)
[INFO] [stdout]             and 127 others
[INFO] [stdout] note: required by a bound in `to_flatten_maptree`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/lib.rs:149:14
[INFO] [stdout]     |
[INFO] [stdout] 148 | pub fn to_flatten_maptree<T: ?Sized>(key_separator: &str, prefix: Option<&str>, src: &T) -> Result<BTreeMap<serde_value::Value, serde_val...
[INFO] [stdout]     |        ------------------ required by a bound in this function
[INFO] [stdout] 149 |     where T: serde::Serialize {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ required by this bound in `to_flatten_maptree`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `serde_json`
[INFO] [stdout]   --> src/lib.rs:135:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |     println!("{}", serde_json::to_string_pretty(&ser).unwrap());
[INFO] [stdout]    |                    ^^^^^^^^^^ use of unresolved module or unlinked crate `serde_json`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `serde_json`, use `cargo add serde_json` to add it to your `Cargo.toml`
[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 - (line 32) stdout ----
[INFO] [stdout] error: cannot find derive macro `Serialize` in this scope
[INFO] [stdout]  --> src/lib.rs:34:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[derive(Serialize, Clone, Debug)]
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: cannot find derive macro `Serialize` in this scope
[INFO] [stdout]   --> src/lib.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[derive(Serialize, Clone, Debug)]
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Foo: serde::Serialize` is not satisfied
[INFO] [stdout]    --> src/lib.rs:50:71
[INFO] [stdout]     |
[INFO] [stdout]  20 |     let ser = serde_value_flatten::to_flatten_maptree("_", Some("_"), &foo).unwrap();
[INFO] [stdout]     |               ---------------------------------------                 ^^^^ the trait `serde_core::ser::Serialize` is not implemented for `Foo`
[INFO] [stdout]     |               |
[INFO] [stdout]     |               required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: for local types consider adding `#[derive(serde::Serialize)]` to your `Foo` type
[INFO] [stdout]     = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]     = help: the following other types implement trait `serde_core::ser::Serialize`:
[INFO] [stdout]               &'a T
[INFO] [stdout]               &'a mut T
[INFO] [stdout]               ()
[INFO] [stdout]               (T,)
[INFO] [stdout]               (T0, T1)
[INFO] [stdout]               (T0, T1, T2)
[INFO] [stdout]               (T0, T1, T2, T3)
[INFO] [stdout]               (T0, T1, T2, T3, T4)
[INFO] [stdout]             and 127 others
[INFO] [stdout] note: required by a bound in `to_flatten_maptree`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/lib.rs:149:14
[INFO] [stdout]     |
[INFO] [stdout] 148 | pub fn to_flatten_maptree<T: ?Sized>(key_separator: &str, prefix: Option<&str>, src: &T) -> Result<BTreeMap<serde_value::Value, serde_val...
[INFO] [stdout]     |        ------------------ required by a bound in this function
[INFO] [stdout] 149 |     where T: serde::Serialize {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ required by this bound in `to_flatten_maptree`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `serde_json`
[INFO] [stdout]   --> src/lib.rs:52:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |     println!("{}", serde_json::to_string_pretty(&ser).unwrap());
[INFO] [stdout]    |                    ^^^^^^^^^^ use of unresolved module or unlinked crate `serde_json`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `serde_json`, use `cargo add serde_json` to add it to your `Cargo.toml`
[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; finished in 0.36s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "ab6e379f053ceec133667b67c462efcc6c869c635428a677c8e92bceaf7a51b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab6e379f053ceec133667b67c462efcc6c869c635428a677c8e92bceaf7a51b5", kill_on_drop: false }`
[INFO] [stdout] ab6e379f053ceec133667b67c462efcc6c869c635428a677c8e92bceaf7a51b5
