[INFO] fetching crate generations 2.0.0...
[INFO] testing generations-2.0.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate generations 2.0.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate generations 2.0.0
[INFO] finished tweaking crates.io crate generations 2.0.0
[INFO] tweaked toml for crates.io crate generations 2.0.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate generations 2.0.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d9de86dda485c0a6d0fa23f17d77ba20b0847132172a3216396f974bbfac5ec
[INFO] running `Command { std: "docker" "start" "-a" "4d9de86dda485c0a6d0fa23f17d77ba20b0847132172a3216396f974bbfac5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d9de86dda485c0a6d0fa23f17d77ba20b0847132172a3216396f974bbfac5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d9de86dda485c0a6d0fa23f17d77ba20b0847132172a3216396f974bbfac5ec", kill_on_drop: false }`
[INFO] [stdout] 4d9de86dda485c0a6d0fa23f17d77ba20b0847132172a3216396f974bbfac5ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52a1f9910866086be480a01b4136bf9143ccbbcf65a4a6edb98a13a0212807b6
[INFO] running `Command { std: "docker" "start" "-a" "52a1f9910866086be480a01b4136bf9143ccbbcf65a4a6edb98a13a0212807b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling generations v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "52a1f9910866086be480a01b4136bf9143ccbbcf65a4a6edb98a13a0212807b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52a1f9910866086be480a01b4136bf9143ccbbcf65a4a6edb98a13a0212807b6", kill_on_drop: false }`
[INFO] [stdout] 52a1f9910866086be480a01b4136bf9143ccbbcf65a4a6edb98a13a0212807b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b65a4503cc63e7cce6198e062b6599c4860d71b176e92aba0faa45ef34bfd10
[INFO] running `Command { std: "docker" "start" "-a" "7b65a4503cc63e7cce6198e062b6599c4860d71b176e92aba0faa45ef34bfd10", kill_on_drop: false }`
[INFO] [stderr]    Compiling generations v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/lib.rs:391:9
[INFO] [stdout]     |
[INFO] [stdout] 391 |         format!("{:?}", &thing);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 391 |         let _ = format!("{:?}", &thing);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "7b65a4503cc63e7cce6198e062b6599c4860d71b176e92aba0faa45ef34bfd10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b65a4503cc63e7cce6198e062b6599c4860d71b176e92aba0faa45ef34bfd10", kill_on_drop: false }`
[INFO] [stdout] 7b65a4503cc63e7cce6198e062b6599c4860d71b176e92aba0faa45ef34bfd10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6d6673c04acc8a2baef7a15dd6c957cfe4e9a99e0270e74bf5c67cdc6773b4c5
[INFO] running `Command { std: "docker" "start" "-a" "6d6673c04acc8a2baef7a15dd6c957cfe4e9a99e0270e74bf5c67cdc6773b4c5", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `must_use` that must be used
[INFO] [stderr]    --> src/lib.rs:391:9
[INFO] [stderr]     |
[INFO] [stderr] 391 |         format!("{:?}", &thing);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 391 |         let _ = format!("{:?}", &thing);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `generations` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/generations-0bc2db7f4449d5dc)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::basic_test ... ok
[INFO] [stdout] test tests::debug_print_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests generations
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - Generations<Model>::reset (line 202) ... ok
[INFO] [stdout] test src/lib.rs - (line 35) ... ok
[INFO] [stdout] test src/lib.rs - Generations<Model>::new (line 102) ... ok
[INFO] [stdout] test src/lib.rs - Generations<Model>::current (line 131) ... ok
[INFO] [stdout] test src/lib.rs - Generations<Model>::step (line 156) ... ok
[INFO] [stdout] test src/lib.rs - Generations<Model>::reset_with (line 181) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.63s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6d6673c04acc8a2baef7a15dd6c957cfe4e9a99e0270e74bf5c67cdc6773b4c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d6673c04acc8a2baef7a15dd6c957cfe4e9a99e0270e74bf5c67cdc6773b4c5", kill_on_drop: false }`
[INFO] [stdout] 6d6673c04acc8a2baef7a15dd6c957cfe4e9a99e0270e74bf5c67cdc6773b4c5