[INFO] fetching crate singleton-cell 0.3.1...
[INFO] testing singleton-cell-0.3.1 against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739-1
[INFO] extracting crate singleton-cell 0.3.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate singleton-cell 0.3.1
[INFO] finished tweaking crates.io crate singleton-cell 0.3.1
[INFO] tweaked toml for crates.io crate singleton-cell 0.3.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate singleton-cell 0.3.1 on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate singleton-cell 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d3dabefdf903d7978222c2081133935132dfb5c25d998852e006379bd4e8fea
[INFO] running `Command { std: "docker" "start" "-a" "3d3dabefdf903d7978222c2081133935132dfb5c25d998852e006379bd4e8fea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d3dabefdf903d7978222c2081133935132dfb5c25d998852e006379bd4e8fea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d3dabefdf903d7978222c2081133935132dfb5c25d998852e006379bd4e8fea", kill_on_drop: false }`
[INFO] [stdout] 3d3dabefdf903d7978222c2081133935132dfb5c25d998852e006379bd4e8fea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efee14b6b94f57338f1c1f11dfa2072de3483a21e535e53054ae10287fe91821
[INFO] running `Command { std: "docker" "start" "-a" "efee14b6b94f57338f1c1f11dfa2072de3483a21e535e53054ae10287fe91821", kill_on_drop: false }`
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]    Compiling singleton-trait v0.3.0
[INFO] [stderr]    Compiling singleton-cell v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "efee14b6b94f57338f1c1f11dfa2072de3483a21e535e53054ae10287fe91821", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efee14b6b94f57338f1c1f11dfa2072de3483a21e535e53054ae10287fe91821", kill_on_drop: false }`
[INFO] [stdout] efee14b6b94f57338f1c1f11dfa2072de3483a21e535e53054ae10287fe91821
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d23c5674bd179487b5a0e159098f74ee08e502578f0aac4708f11f366661dea
[INFO] running `Command { std: "docker" "start" "-a" "0d23c5674bd179487b5a0e159098f74ee08e502578f0aac4708f11f366661dea", kill_on_drop: false }`
[INFO] [stderr]    Compiling singleton-cell v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate as singleton_cell`
[INFO] [stdout]    --> src/lib.rs:351:9
[INFO] [stdout]     |
[INFO] [stdout] 351 |     use crate as singleton_cell;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:400:30
[INFO] [stdout]     |
[INFO] [stdout] 400 |             struct Local<'a>(&'a ());
[INFO] [stdout]     |                    -----     ^^^^^^
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_erased` is never used
[INFO] [stdout]    --> src/lib.rs:333:24
[INFO] [stdout]     |
[INFO] [stdout] 303 |                 impl $Name {
[INFO] [stdout]     |                 ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 333 |                     fn new_erased() -> Option<$crate::Erased<Self>> {
[INFO] [stdout]     |                        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 422 |         new_singleton!(pub A);
[INFO] [stdout]     |         --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `new_singleton` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_erased` is never used
[INFO] [stdout]    --> src/lib.rs:333:24
[INFO] [stdout]     |
[INFO] [stdout] 303 |                 impl $Name {
[INFO] [stdout]     |                 ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 333 |                     fn new_erased() -> Option<$crate::Erased<Self>> {
[INFO] [stdout]     |                        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 429 |         new_singleton!(pub A);
[INFO] [stdout]     |         --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `new_singleton` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_erased` is never used
[INFO] [stdout]    --> src/lib.rs:333:24
[INFO] [stdout]     |
[INFO] [stdout] 303 |                 impl $Name {
[INFO] [stdout]     |                 ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 333 |                     fn new_erased() -> Option<$crate::Erased<Self>> {
[INFO] [stdout]     |                        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 430 |         new_singleton!(pub B);
[INFO] [stdout]     |         --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `new_singleton` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "0d23c5674bd179487b5a0e159098f74ee08e502578f0aac4708f11f366661dea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d23c5674bd179487b5a0e159098f74ee08e502578f0aac4708f11f366661dea", kill_on_drop: false }`
[INFO] [stdout] 0d23c5674bd179487b5a0e159098f74ee08e502578f0aac4708f11f366661dea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] facb737156ffcd81e50d265bdc27add141d1d169a51ac3c07ec621e478081299
[INFO] running `Command { std: "docker" "start" "-a" "facb737156ffcd81e50d265bdc27add141d1d169a51ac3c07ec621e478081299", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate as singleton_cell`
[INFO] [stderr]    --> src/lib.rs:351:9
[INFO] [stderr]     |
[INFO] [stderr] 351 |     use crate as singleton_cell;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/lib.rs:400:30
[INFO] [stderr]     |
[INFO] [stderr] 400 |             struct Local<'a>(&'a ());
[INFO] [stderr]     |                    -----     ^^^^^^
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    field in this struct
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing this field
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new_erased` is never used
[INFO] [stderr]    --> src/lib.rs:333:24
[INFO] [stderr]     |
[INFO] [stderr] 303 |                 impl $Name {
[INFO] [stderr]     |                 ---------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 333 |                     fn new_erased() -> Option<$crate::Erased<Self>> {
[INFO] [stderr]     |                        ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 422 |         new_singleton!(pub A);
[INFO] [stderr]     |         --------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `new_singleton` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new_erased` is never used
[INFO] [stderr]    --> src/lib.rs:333:24
[INFO] [stderr]     |
[INFO] [stderr] 303 |                 impl $Name {
[INFO] [stderr]     |                 ---------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 333 |                     fn new_erased() -> Option<$crate::Erased<Self>> {
[INFO] [stderr]     |                        ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 429 |         new_singleton!(pub A);
[INFO] [stderr]     |         --------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `new_singleton` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new_erased` is never used
[INFO] [stderr]    --> src/lib.rs:333:24
[INFO] [stderr]     |
[INFO] [stderr] 303 |                 impl $Name {
[INFO] [stderr]     |                 ---------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 333 |                     fn new_erased() -> Option<$crate::Erased<Self>> {
[INFO] [stderr]     |                        ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 430 |         new_singleton!(pub B);
[INFO] [stderr]     |         --------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `new_singleton` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `singleton-cell` (lib test) generated 5 warnings (run `cargo fix --lib -p singleton-cell --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/singleton_cell-8516c741bee64124)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::global_singleton_distinct ... ok
[INFO] [stdout] test tests::ghost_read_after_write ... ok
[INFO] [stdout] test tests::global_singleton_unique ... ok
[INFO] [stdout] test tests::local_type_round_trip ... ok
[INFO] [stdout] test tests::ghost_trivial ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests singleton_cell
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - new_singleton (line 269) ... ok
[INFO] [stdout] test src/lib.rs - with_token (line 239) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.20s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "facb737156ffcd81e50d265bdc27add141d1d169a51ac3c07ec621e478081299", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "facb737156ffcd81e50d265bdc27add141d1d169a51ac3c07ec621e478081299", kill_on_drop: false }`
[INFO] [stdout] facb737156ffcd81e50d265bdc27add141d1d169a51ac3c07ec621e478081299
