[INFO] fetching crate polytype 7.0.1...
[INFO] testing polytype-7.0.1 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate polytype 7.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate polytype 7.0.1
[INFO] finished tweaking crates.io crate polytype 7.0.1
[INFO] tweaked toml for crates.io crate polytype 7.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate polytype 7.0.1 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 26 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.12.1 (available: v0.14.0)
[INFO] [stderr]       Adding winnow v0.5.40 (available: v0.7.13)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a63d888bae3a2485a1d89679acdcee6b93d19caaf1bab5e862d1f0c2fb73bf7
[INFO] running `Command { std: "docker" "start" "-a" "1a63d888bae3a2485a1d89679acdcee6b93d19caaf1bab5e862d1f0c2fb73bf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a63d888bae3a2485a1d89679acdcee6b93d19caaf1bab5e862d1f0c2fb73bf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a63d888bae3a2485a1d89679acdcee6b93d19caaf1bab5e862d1f0c2fb73bf7", kill_on_drop: false }`
[INFO] [stdout] 1a63d888bae3a2485a1d89679acdcee6b93d19caaf1bab5e862d1f0c2fb73bf7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c41e608aa5f6421c159bcac7ba9e8843ea9604f893e3eb69244a58e270553c50
[INFO] running `Command { std: "docker" "start" "-a" "c41e608aa5f6421c159bcac7ba9e8843ea9604f893e3eb69244a58e270553c50", kill_on_drop: false }`
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling polytype v7.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.58s
[INFO] running `Command { std: "docker" "inspect" "c41e608aa5f6421c159bcac7ba9e8843ea9604f893e3eb69244a58e270553c50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c41e608aa5f6421c159bcac7ba9e8843ea9604f893e3eb69244a58e270553c50", kill_on_drop: false }`
[INFO] [stdout] c41e608aa5f6421c159bcac7ba9e8843ea9604f893e3eb69244a58e270553c50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 714c9c084efc65e7d49408274bd85ca608de3219047f8206ed1f5acbc2dedf9a
[INFO] running `Command { std: "docker" "start" "-a" "714c9c084efc65e7d49408274bd85ca608de3219047f8206ed1f5acbc2dedf9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling polytype v7.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "714c9c084efc65e7d49408274bd85ca608de3219047f8206ed1f5acbc2dedf9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "714c9c084efc65e7d49408274bd85ca608de3219047f8206ed1f5acbc2dedf9a", kill_on_drop: false }`
[INFO] [stdout] 714c9c084efc65e7d49408274bd85ca608de3219047f8206ed1f5acbc2dedf9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0e8ad77a8e44d48534b7fa71764e8757283ad247d5c92e97b6d508c992dcd1a8
[INFO] running `Command { std: "docker" "start" "-a" "0e8ad77a8e44d48534b7fa71764e8757283ad247d5c92e97b6d508c992dcd1a8", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/polytype-2fb70ac6e7d2ff71)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-cfa3e7352047996e)
[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] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test test_arrow_methods ... ok
[INFO] [stdout] test test_merge_with_sacreds ... ok
[INFO] [stdout] test test_parse ... ok
[INFO] [stdout] test test_ptp_macro ... ok
[INFO] [stdout] test test_tp_from_vec ... ok
[INFO] [stdout] test test_tp_from_vecdeque ... ok
[INFO] [stdout] test test_tp_macro ... ok
[INFO] [stderr]    Doc-tests polytype
[INFO] [stdout] test test_unify_both_sides_polymorphic ... ok
[INFO] [stdout] test test_unify_nonstring_name ... ok
[INFO] [stdout] test test_unify_one_side_polymorphic ... ok
[INFO] [stdout] test test_unify_one_side_polymorphic_fail ... ok
[INFO] [stdout] test test_unify_both_sides_polymorphic_occurs ... ok
[INFO] [stdout] test test_context_is_send ... ok
[INFO] [stdout] test test_merge_no_sacreds ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 45 tests
[INFO] [stdout] test src/context.rs - context::Context<N>::unify (line 184) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::new_variable (line 156) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::unify (line 200) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::confine (line 305) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::unify (line 220) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::merge (line 372) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::merge (line 345) ... ok
[INFO] [stdout] test src/lib.rs - Infer (line 195) ... ok
[INFO] [stdout] test src/macros.rs - macros::ptp (line 119) ... ignored
[INFO] [stdout] test src/context.rs - context::Context<N>::clean (line 106) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] test src/lib.rs - Name (line 122) ... ok
[INFO] [stdout] test src/macros.rs - macros::ptp (line 141) ... ok
[INFO] [stdout] test src/lib.rs - Name (line 130) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 5) ... ignored
[INFO] [stdout] test src/macros.rs - macros::ptp (line 185) ... ok
[INFO] [stdout] test src/lib.rs - (line 44) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 31) ... ok
[INFO] [stdout] test src/lib.rs - Infer (line 247) ... ok
[INFO] [stdout] test src/lib.rs - Infer (line 210) ... ok
[INFO] [stdout] test src/macros.rs - macros::ptp (line 159) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 53) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 42) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Constructed (line 205) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 86) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 69) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Constructed (line 188) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::apply (line 409) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Constructed (line 215) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Variable (line 235) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Constructed (line 196) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Variable (line 244) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::arrow (line 261) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::args (line 324) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::substitute (line 546) ... ok
[INFO] [stdout] test src/parser.rs - parser::Type<N>::from_str (line 63) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::generalize (line 481) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::returns (line 378) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::vars (line 516) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::as_arrow (line 273) ... ok
[INFO] [stdout] test src/types.rs - types::TypeScheme<N>::free_vars (line 77) ... ok
[INFO] [stdout] test src/types.rs - types::TypeScheme<N>::instantiate (line 108) ... ok
[INFO] [stdout] test src/types.rs - types::TypeScheme<N>::is_bound (line 39) ... ok
[INFO] [stdout] test src/parser.rs - parser::TypeScheme<N>::from_str (line 33) ... ok
[INFO] [stdout] test src/types.rs - types::TypeScheme<N>::bound_vars (line 56) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 43 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 6.68s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0e8ad77a8e44d48534b7fa71764e8757283ad247d5c92e97b6d508c992dcd1a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e8ad77a8e44d48534b7fa71764e8757283ad247d5c92e97b6d508c992dcd1a8", kill_on_drop: false }`
[INFO] [stdout] 0e8ad77a8e44d48534b7fa71764e8757283ad247d5c92e97b6d508c992dcd1a8