[INFO] fetching crate dodo 0.3.0...
[INFO] checking dodo-0.3.0 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate dodo 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate dodo 0.3.0 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dodo 0.3.0
[INFO] finished tweaking crates.io crate dodo 0.3.0
[INFO] tweaked toml for crates.io crate dodo 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate dodo 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", 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] 9911dce18bb1c2e1ad40d7d8ea38176c3d4362246502f8eb34393660f8767ed0
[INFO] running `Command { std: "docker" "start" "-a" "9911dce18bb1c2e1ad40d7d8ea38176c3d4362246502f8eb34393660f8767ed0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9911dce18bb1c2e1ad40d7d8ea38176c3d4362246502f8eb34393660f8767ed0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9911dce18bb1c2e1ad40d7d8ea38176c3d4362246502f8eb34393660f8767ed0", kill_on_drop: false }`
[INFO] [stdout] 9911dce18bb1c2e1ad40d7d8ea38176c3d4362246502f8eb34393660f8767ed0
[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=forbid" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb671a4d8f7fd501238a71aa784d833c07bc59eed93e79bba38be7d952391b4e
[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" "eb671a4d8f7fd501238a71aa784d833c07bc59eed93e79bba38be7d952391b4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]     Checking regex-syntax v0.6.20
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking unicode-normalization v0.1.13
[INFO] [stderr]     Checking pulldown-cmark v0.7.2
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]    Compiling dodo-derive v0.3.0
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking version-sync v0.9.1
[INFO] [stderr]     Checking dodo v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `dodo::YamlSerializer`
[INFO] [stdout]  --> tests/serializer/yaml.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use dodo::{Serializer, YamlSerializer};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^
[INFO] [stdout]   |                        |
[INFO] [stdout]   |                        no `YamlSerializer` in the root
[INFO] [stdout]   |                        help: a similar name exists in the module: `JsonSerializer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Serializer`
[INFO] [stdout]  --> tests/serializer/yaml.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use dodo::{Serializer, YamlSerializer};
[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 `dodo`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "eb671a4d8f7fd501238a71aa784d833c07bc59eed93e79bba38be7d952391b4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb671a4d8f7fd501238a71aa784d833c07bc59eed93e79bba38be7d952391b4e", kill_on_drop: false }`
[INFO] [stdout] eb671a4d8f7fd501238a71aa784d833c07bc59eed93e79bba38be7d952391b4e