[INFO] fetching crate polytype 7.0.1...
[INFO] testing polytype-7.0.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate polytype 7.0.1 into /workspace/builds/worker-1-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-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate polytype 7.0.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fbfed57971944a04d6cd8992514beb6ef50b3a20df31e5b6cae615e28ef5a2a
[INFO] running `Command { std: "docker" "start" "-a" "9fbfed57971944a04d6cd8992514beb6ef50b3a20df31e5b6cae615e28ef5a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fbfed57971944a04d6cd8992514beb6ef50b3a20df31e5b6cae615e28ef5a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fbfed57971944a04d6cd8992514beb6ef50b3a20df31e5b6cae615e28ef5a2a", kill_on_drop: false }`
[INFO] [stdout] 9fbfed57971944a04d6cd8992514beb6ef50b3a20df31e5b6cae615e28ef5a2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8520d3d481420ea13c60ce62b450f3c890724fffb3ff101ecb1f03e947d815b
[INFO] running `Command { std: "docker" "start" "-a" "d8520d3d481420ea13c60ce62b450f3c890724fffb3ff101ecb1f03e947d815b", kill_on_drop: false }`
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling polytype v7.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.39s
[INFO] running `Command { std: "docker" "inspect" "d8520d3d481420ea13c60ce62b450f3c890724fffb3ff101ecb1f03e947d815b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8520d3d481420ea13c60ce62b450f3c890724fffb3ff101ecb1f03e947d815b", kill_on_drop: false }`
[INFO] [stdout] d8520d3d481420ea13c60ce62b450f3c890724fffb3ff101ecb1f03e947d815b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fb934a856324e78dbe6ebef02d54d18b6d82e26acbab13fb2216db3e16ba74d
[INFO] running `Command { std: "docker" "start" "-a" "3fb934a856324e78dbe6ebef02d54d18b6d82e26acbab13fb2216db3e16ba74d", kill_on_drop: false }`
[INFO] [stderr]    Compiling polytype v7.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `Command { std: "docker" "inspect" "3fb934a856324e78dbe6ebef02d54d18b6d82e26acbab13fb2216db3e16ba74d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fb934a856324e78dbe6ebef02d54d18b6d82e26acbab13fb2216db3e16ba74d", kill_on_drop: false }`
[INFO] [stdout] 3fb934a856324e78dbe6ebef02d54d18b6d82e26acbab13fb2216db3e16ba74d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 32b48210ccbb0bc7ff85b49fb42fb1cc46822489e212c6caa848edac57901ca8
[INFO] running `Command { std: "docker" "start" "-a" "32b48210ccbb0bc7ff85b49fb42fb1cc46822489e212c6caa848edac57901ca8", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/polytype-1ecd9380764a5f8c)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-a034dc6d549e5b53)
[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] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test test_arrow_methods ... ok
[INFO] [stdout] test test_merge_no_sacreds ... ok
[INFO] [stdout] test test_tp_from_vec ... ok
[INFO] [stdout] test test_parse ... ok
[INFO] [stdout] test test_ptp_macro ... ok
[INFO] [stdout] test test_tp_from_vecdeque ... ok
[INFO] [stdout] test test_unify_both_sides_polymorphic ... ok
[INFO] [stdout] test test_tp_macro ... ok
[INFO] [stdout] test test_unify_both_sides_polymorphic_occurs ... ok
[INFO] [stdout] test test_unify_one_side_polymorphic ... ok
[INFO] [stdout] test test_unify_one_side_polymorphic_fail ... ok
[INFO] [stdout] test test_merge_with_sacreds ... ok
[INFO] [stderr]    Doc-tests polytype
[INFO] [stdout] test test_context_is_send ... ok
[INFO] [stdout] test test_unify_nonstring_name ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 45 tests
[INFO] [stdout] test src/macros.rs - macros::ptp (line 119) ... ignored
[INFO] [stdout] test src/lib.rs - Name (line 122) ... ok
[INFO] [stdout] test src/lib.rs - Infer (line 195) ... ok
[INFO] [stdout] test src/lib.rs - Infer (line 247) ... ok
[INFO] [stdout] test src/lib.rs - Name (line 130) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::unify (line 220) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 5) ... ignored
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::merge (line 345) ... ok
[INFO] [stdout] test src/macros.rs - macros::ptp (line 141) ... ok
[INFO] [stdout] test src/lib.rs - Infer (line 210) ... 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/macros.rs - macros::ptp (line 185) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 42) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::merge (line 372) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 31) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::clean (line 106) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::new_variable (line 156) ... ok
[INFO] [stdout] test src/lib.rs - (line 44) ... ok
[INFO] [stdout] test src/macros.rs - macros::ptp (line 159) ... ok
[INFO] [stdout] test src/context.rs - context::Context<N>::unify (line 184) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 53) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Constructed (line 196) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 86) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Variable (line 235) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Constructed (line 205) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Variable (line 244) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Constructed (line 215) ... ok
[INFO] [stdout] test src/macros.rs - macros::tp (line 69) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::as_arrow (line 273) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::arrow (line 261) ... ok
[INFO] [stdout] test src/types.rs - types::Type::Constructed (line 188) ... ok
[INFO] [stdout] test src/parser.rs - parser::TypeScheme<N>::from_str (line 33) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::returns (line 378) ... ok
[INFO] [stdout] test src/types.rs - types::TypeScheme<N>::bound_vars (line 56) ... 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/types.rs - types::Type<N>::generalize (line 481) ... ok
[INFO] [stdout] test src/parser.rs - parser::Type<N>::from_str (line 63) ... ok
[INFO] [stdout] test src/types.rs - types::TypeScheme<N>::is_bound (line 39) ... 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::Type<N>::vars (line 516) ... ok
[INFO] [stdout] test src/types.rs - types::Type<N>::apply (line 409) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 43 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 2.58s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "32b48210ccbb0bc7ff85b49fb42fb1cc46822489e212c6caa848edac57901ca8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32b48210ccbb0bc7ff85b49fb42fb1cc46822489e212c6caa848edac57901ca8", kill_on_drop: false }`
[INFO] [stdout] 32b48210ccbb0bc7ff85b49fb42fb1cc46822489e212c6caa848edac57901ca8