[INFO] fetching crate serde_single_or_vec 1.0.1...
[INFO] testing serde_single_or_vec-1.0.1 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate serde_single_or_vec 1.0.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate serde_single_or_vec 1.0.1
[INFO] finished tweaking crates.io crate serde_single_or_vec 1.0.1
[INFO] tweaked toml for crates.io crate serde_single_or_vec 1.0.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_single_or_vec 1.0.1 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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 arrayvec v0.5.2 (available: v0.7.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3a4030f3705503bef1fd10afae8b6a34a07156b6df4a54cbce40cee2b542b85
[INFO] running `Command { std: "docker" "start" "-a" "e3a4030f3705503bef1fd10afae8b6a34a07156b6df4a54cbce40cee2b542b85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3a4030f3705503bef1fd10afae8b6a34a07156b6df4a54cbce40cee2b542b85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3a4030f3705503bef1fd10afae8b6a34a07156b6df4a54cbce40cee2b542b85", kill_on_drop: false }`
[INFO] [stdout] e3a4030f3705503bef1fd10afae8b6a34a07156b6df4a54cbce40cee2b542b85
[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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0af5e8352fba6977a6b069b6c0d1cfba7adc3151109a4f05109b58050ee046e
[INFO] running `Command { std: "docker" "start" "-a" "c0af5e8352fba6977a6b069b6c0d1cfba7adc3151109a4f05109b58050ee046e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_single_or_vec v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `private` in `serde`
[INFO] [stdout]    --> src/lib.rs:183:5
[INFO] [stdout]     |
[INFO] [stdout] 183 |     private::de::{Content, ContentRefDeserializer},
[INFO] [stdout]     |     ^^^^^^^ could not find `private` in `serde`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `box_pointers` has been removed: it does not detect other kinds of allocations, and existed only for historical reasons
[INFO] [stdout]    --> src/lib.rs:131:5
[INFO] [stdout]     |
[INFO] [stdout] 131 |     box_pointers,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `indirect_structural_match` has been removed: converted into hard error, see RFC #3535 <https://rust-lang.github.io/rfcs/3535-constants-in-patterns.html> for more information
[INFO] [stdout]    --> src/lib.rs:136:5
[INFO] [stdout]     |
[INFO] [stdout] 136 |     indirect_structural_match,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `unaligned_references` has been removed: converted into hard error, see issue #82523 <https://github.com/rust-lang/rust/issues/82523> for more information
[INFO] [stdout]    --> src/lib.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     unaligned_references,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde_single_or_vec` (lib) due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c0af5e8352fba6977a6b069b6c0d1cfba7adc3151109a4f05109b58050ee046e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0af5e8352fba6977a6b069b6c0d1cfba7adc3151109a4f05109b58050ee046e", kill_on_drop: false }`
[INFO] [stdout] c0af5e8352fba6977a6b069b6c0d1cfba7adc3151109a4f05109b58050ee046e