[INFO] cloning repository https://github.com/toidiu/talk_rust_2093
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/toidiu/talk_rust_2093" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftoidiu%2Ftalk_rust_2093", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftoidiu%2Ftalk_rust_2093'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a7ad5b55a8620d45588a427aca31290ce8cef0fd
[INFO] testing toidiu/talk_rust_2093 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftoidiu%2Ftalk_rust_2093" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/toidiu/talk_rust_2093 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/toidiu/talk_rust_2093
[INFO] finished tweaking git repo https://github.com/toidiu/talk_rust_2093
[INFO] tweaked toml for git repo https://github.com/toidiu/talk_rust_2093 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/toidiu/talk_rust_2093 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f7232de4f6e5c9699dd3d4a9aaca643c30f72bfd77839cf030ff94305d7fdb78
[INFO] running `Command { std: "docker" "start" "-a" "f7232de4f6e5c9699dd3d4a9aaca643c30f72bfd77839cf030ff94305d7fdb78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7232de4f6e5c9699dd3d4a9aaca643c30f72bfd77839cf030ff94305d7fdb78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7232de4f6e5c9699dd3d4a9aaca643c30f72bfd77839cf030ff94305d7fdb78", kill_on_drop: false }`
[INFO] [stdout] f7232de4f6e5c9699dd3d4a9aaca643c30f72bfd77839cf030ff94305d7fdb78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 635bf69cd04c8e6dca4cb1bd7ce40d8d3d80299d85b77636f2ca16ad88a6a8d7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "635bf69cd04c8e6dca4cb1bd7ce40d8d3d80299d85b77636f2ca16ad88a6a8d7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling infer v0.1.0 (/opt/rustwide/workdir/lib/infer)
[INFO] [stderr]    Compiling explicit v0.1.0 (/opt/rustwide/workdir/lib/explicit)
[INFO] [stdout] warning: struct is never constructed: `Foo`
[INFO] [stdout]  --> lib/infer/src/lib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Foo<'a, T> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `infer_outlives_requirements` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> lib/infer/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(infer_outlives_requirements)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Foo`
[INFO] [stdout]  --> lib/explicit/src/lib.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Foo<'a, T>
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling present v0.1.0 (/opt/rustwide/workdir/bin/present)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.99s
[INFO] running `Command { std: "docker" "inspect" "635bf69cd04c8e6dca4cb1bd7ce40d8d3d80299d85b77636f2ca16ad88a6a8d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "635bf69cd04c8e6dca4cb1bd7ce40d8d3d80299d85b77636f2ca16ad88a6a8d7", kill_on_drop: false }`
[INFO] [stdout] 635bf69cd04c8e6dca4cb1bd7ce40d8d3d80299d85b77636f2ca16ad88a6a8d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e1356c34352a83941446c7aa4e55aa4f16864fbd76239e7372bb8463715429f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8e1356c34352a83941446c7aa4e55aa4f16864fbd76239e7372bb8463715429f", kill_on_drop: false }`
[INFO] [stdout] warning: struct is never constructed: `Foo`
[INFO] [stdout]  --> lib/explicit/src/lib.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Foo<'a, T>
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Foo`
[INFO] [stdout]  --> lib/infer/src/lib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Foo<'a, T> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `infer_outlives_requirements` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> lib/infer/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(infer_outlives_requirements)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling infer v0.1.0 (/opt/rustwide/workdir/lib/infer)
[INFO] [stderr]    Compiling explicit v0.1.0 (/opt/rustwide/workdir/lib/explicit)
[INFO] [stderr]    Compiling present v0.1.0 (/opt/rustwide/workdir/bin/present)
[INFO] [stdout] warning: struct is never constructed: `Foo`
[INFO] [stdout]  --> lib/explicit/src/lib.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Foo<'a, T>
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Foo`
[INFO] [stdout]  --> lib/infer/src/lib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Foo<'a, T> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `infer_outlives_requirements` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> lib/infer/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(infer_outlives_requirements)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "8e1356c34352a83941446c7aa4e55aa4f16864fbd76239e7372bb8463715429f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e1356c34352a83941446c7aa4e55aa4f16864fbd76239e7372bb8463715429f", kill_on_drop: false }`
[INFO] [stdout] 8e1356c34352a83941446c7aa4e55aa4f16864fbd76239e7372bb8463715429f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7ba730eb92ed546c115942a1cae331444f4b9e7b662851a51d215fc3e945d771
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7ba730eb92ed546c115942a1cae331444f4b9e7b662851a51d215fc3e945d771", kill_on_drop: false }`
[INFO] [stderr] warning: struct is never constructed: `Foo`
[INFO] [stderr]  --> lib/infer/src/lib.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Foo<'a, T> {
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `infer_outlives_requirements` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> lib/infer/src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(infer_outlives_requirements)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Foo`
[INFO] [stderr]  --> lib/explicit/src/lib.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Foo<'a, T>
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Foo`
[INFO] [stderr]  --> lib/infer/src/lib.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Foo<'a, T> {
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `infer_outlives_requirements` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> lib/infer/src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(infer_outlives_requirements)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Foo`
[INFO] [stderr]  --> lib/explicit/src/lib.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Foo<'a, T>
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/explicit-ec0b22bfa5ab3b75)
[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]      Running unittests (/opt/rustwide/target/debug/deps/infer-4925472ff9498f4e)
[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 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/present-14b7b9363576aa36)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests explicit
[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 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] [stderr]    Doc-tests infer
[INFO] [stdout] 
[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] running `Command { std: "docker" "inspect" "7ba730eb92ed546c115942a1cae331444f4b9e7b662851a51d215fc3e945d771", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ba730eb92ed546c115942a1cae331444f4b9e7b662851a51d215fc3e945d771", kill_on_drop: false }`
[INFO] [stdout] 7ba730eb92ed546c115942a1cae331444f4b9e7b662851a51d215fc3e945d771