[INFO] fetching crate flag_set 0.1.6...
[INFO] testing flag_set-0.1.6 against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] extracting crate flag_set 0.1.6 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate flag_set 0.1.6
[INFO] finished tweaking crates.io crate flag_set 0.1.6
[INFO] tweaked toml for crates.io crate flag_set 0.1.6 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate flag_set 0.1.6 on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8007dd53443a50c78190d0ad83e32ecc08f6c74a0bb9d0df1cf3bb6cb9307f13
[INFO] running `Command { std: "docker" "start" "-a" "8007dd53443a50c78190d0ad83e32ecc08f6c74a0bb9d0df1cf3bb6cb9307f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8007dd53443a50c78190d0ad83e32ecc08f6c74a0bb9d0df1cf3bb6cb9307f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8007dd53443a50c78190d0ad83e32ecc08f6c74a0bb9d0df1cf3bb6cb9307f13", kill_on_drop: false }`
[INFO] [stdout] 8007dd53443a50c78190d0ad83e32ecc08f6c74a0bb9d0df1cf3bb6cb9307f13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6dc09aefbfa4b7bdcefb99d39da6b45b9f60d40a9478746f62069a7e22a0b318
[INFO] running `Command { std: "docker" "start" "-a" "6dc09aefbfa4b7bdcefb99d39da6b45b9f60d40a9478746f62069a7e22a0b318", kill_on_drop: false }`
[INFO] [stderr]    Compiling flag_set v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "6dc09aefbfa4b7bdcefb99d39da6b45b9f60d40a9478746f62069a7e22a0b318", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dc09aefbfa4b7bdcefb99d39da6b45b9f60d40a9478746f62069a7e22a0b318", kill_on_drop: false }`
[INFO] [stdout] 6dc09aefbfa4b7bdcefb99d39da6b45b9f60d40a9478746f62069a7e22a0b318
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d505db8fac2a239372d26745b6bfd3e65f09b13ac63e6563cbb96f6968696f8
[INFO] running `Command { std: "docker" "start" "-a" "2d505db8fac2a239372d26745b6bfd3e65f09b13ac63e6563cbb96f6968696f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling flag_set v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "2d505db8fac2a239372d26745b6bfd3e65f09b13ac63e6563cbb96f6968696f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d505db8fac2a239372d26745b6bfd3e65f09b13ac63e6563cbb96f6968696f8", kill_on_drop: false }`
[INFO] [stdout] 2d505db8fac2a239372d26745b6bfd3e65f09b13ac63e6563cbb96f6968696f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 41f199e936eb3a9748ecd2fa51a8e573bff8c4d8a178398ca9df3142b23b2845
[INFO] running `Command { std: "docker" "start" "-a" "41f199e936eb3a9748ecd2fa51a8e573bff8c4d8a178398ca9df3142b23b2845", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/flag_set-b11c57a130dd4ce9)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flag_set
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 27) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 27) stdout ----
[INFO] [stdout] error[E0423]: cannot initialize a tuple struct which contains private fields
[INFO] [stdout]    --> src/lib.rs:35:15
[INFO] [stdout]     |
[INFO] [stdout]  35 | let flag_ap = FlagSet(a.clone(), true);
[INFO] [stdout]     |               ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: constructor is not visible here due to private fields
[INFO] [stdout]    --> src/lib.rs:133:34
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub struct FlagSet<T: Eq + Hash>(HashSet<T>, bool);
[INFO] [stdout]     |                                  ^^^^^^^^^^  ^^^^ private field
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  private field
[INFO] [stdout] help: you might have meant to use the `new` associated function
[INFO] [stdout]     |
[INFO] [stdout]  35 | let flag_ap = FlagSet::new(a.clone(), true);
[INFO] [stdout]     |                      +++++
[INFO] [stdout] help: consider using the `Default` trait
[INFO] [stdout]     |
[INFO] [stdout]  35 - let flag_ap = FlagSet(a.clone(), true);
[INFO] [stdout]  35 + let flag_ap = <FlagSet as std::default::Default>::default();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: cannot initialize a tuple struct which contains private fields
[INFO] [stdout]    --> src/lib.rs:36:15
[INFO] [stdout]     |
[INFO] [stdout]  36 | let flag_an = FlagSet(a.clone(), false);
[INFO] [stdout]     |               ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: constructor is not visible here due to private fields
[INFO] [stdout]    --> src/lib.rs:133:34
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub struct FlagSet<T: Eq + Hash>(HashSet<T>, bool);
[INFO] [stdout]     |                                  ^^^^^^^^^^  ^^^^ private field
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  private field
[INFO] [stdout] help: you might have meant to use the `new` associated function
[INFO] [stdout]     |
[INFO] [stdout]  36 | let flag_an = FlagSet::new(a.clone(), false);
[INFO] [stdout]     |                      +++++
[INFO] [stdout] help: consider using the `Default` trait
[INFO] [stdout]     |
[INFO] [stdout]  36 - let flag_an = FlagSet(a.clone(), false);
[INFO] [stdout]  36 + let flag_an = <FlagSet as std::default::Default>::default();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: cannot initialize a tuple struct which contains private fields
[INFO] [stdout]    --> src/lib.rs:37:15
[INFO] [stdout]     |
[INFO] [stdout]  37 | let flag_bp = FlagSet(b.clone(), true);
[INFO] [stdout]     |               ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: constructor is not visible here due to private fields
[INFO] [stdout]    --> src/lib.rs:133:34
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub struct FlagSet<T: Eq + Hash>(HashSet<T>, bool);
[INFO] [stdout]     |                                  ^^^^^^^^^^  ^^^^ private field
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  private field
[INFO] [stdout] help: you might have meant to use the `new` associated function
[INFO] [stdout]     |
[INFO] [stdout]  37 | let flag_bp = FlagSet::new(b.clone(), true);
[INFO] [stdout]     |                      +++++
[INFO] [stdout] help: consider using the `Default` trait
[INFO] [stdout]     |
[INFO] [stdout]  37 - let flag_bp = FlagSet(b.clone(), true);
[INFO] [stdout]  37 + let flag_bp = <FlagSet as std::default::Default>::default();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: cannot initialize a tuple struct which contains private fields
[INFO] [stdout]    --> src/lib.rs:38:15
[INFO] [stdout]     |
[INFO] [stdout]  38 | let flag_bn = FlagSet(b.clone(), false);
[INFO] [stdout]     |               ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: constructor is not visible here due to private fields
[INFO] [stdout]    --> src/lib.rs:133:34
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub struct FlagSet<T: Eq + Hash>(HashSet<T>, bool);
[INFO] [stdout]     |                                  ^^^^^^^^^^  ^^^^ private field
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  private field
[INFO] [stdout] help: you might have meant to use the `new` associated function
[INFO] [stdout]     |
[INFO] [stdout]  38 | let flag_bn = FlagSet::new(b.clone(), false);
[INFO] [stdout]     |                      +++++
[INFO] [stdout] help: consider using the `Default` trait
[INFO] [stdout]     |
[INFO] [stdout]  38 - let flag_bn = FlagSet(b.clone(), false);
[INFO] [stdout]  38 + let flag_bn = <FlagSet as std::default::Default>::default();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: cannot initialize a tuple struct which contains private fields
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | assert_eq!(FlagSet(a.clone(), true), !flag_an.clone());
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: constructor is not visible here due to private fields
[INFO] [stdout]    --> src/lib.rs:133:34
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub struct FlagSet<T: Eq + Hash>(HashSet<T>, bool);
[INFO] [stdout]     |                                  ^^^^^^^^^^  ^^^^ private field
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  private field
[INFO] [stdout] help: you might have meant to use the `new` associated function
[INFO] [stdout]     |
[INFO] [stdout]  67 | assert_eq!(FlagSet::new(a.clone(), true), !flag_an.clone());
[INFO] [stdout]     |                   +++++
[INFO] [stdout] help: consider using the `Default` trait
[INFO] [stdout]     |
[INFO] [stdout]  67 - assert_eq!(FlagSet(a.clone(), true), !flag_an.clone());
[INFO] [stdout]  67 + assert_eq!(<FlagSet as std::default::Default>::default(), !flag_an.clone());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 27)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "41f199e936eb3a9748ecd2fa51a8e573bff8c4d8a178398ca9df3142b23b2845", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41f199e936eb3a9748ecd2fa51a8e573bff8c4d8a178398ca9df3142b23b2845", kill_on_drop: false }`
[INFO] [stdout] 41f199e936eb3a9748ecd2fa51a8e573bff8c4d8a178398ca9df3142b23b2845
