[INFO] fetching crate metatrait 0.0.0-alpha.1...
[INFO] testing metatrait-0.0.0-alpha.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate metatrait 0.0.0-alpha.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate metatrait 0.0.0-alpha.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate metatrait 0.0.0-alpha.1
[INFO] tweaked toml for crates.io crate metatrait 0.0.0-alpha.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate metatrait 0.0.0-alpha.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate metatrait 0.0.0-alpha.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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-macro v0.3.30
[INFO] [stderr]   Downloaded ghost v0.1.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcb813a62143fa5e208383177c25be729066fe49e21a2bbb995a466c062f0c17
[INFO] running `Command { std: "docker" "start" "-a" "dcb813a62143fa5e208383177c25be729066fe49e21a2bbb995a466c062f0c17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcb813a62143fa5e208383177c25be729066fe49e21a2bbb995a466c062f0c17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcb813a62143fa5e208383177c25be729066fe49e21a2bbb995a466c062f0c17", kill_on_drop: false }`
[INFO] [stdout] dcb813a62143fa5e208383177c25be729066fe49e21a2bbb995a466c062f0c17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4dadc9adb1cf821b4d5d63f6844b9ade5d40dd7d834fbc885d332ff2802a33c9
[INFO] running `Command { std: "docker" "start" "-a" "4dadc9adb1cf821b4d5d63f6844b9ade5d40dd7d834fbc885d332ff2802a33c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling ghost v0.1.17
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling pin-project v1.1.5
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling metatrait v0.0.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.66s
[INFO] running `Command { std: "docker" "inspect" "4dadc9adb1cf821b4d5d63f6844b9ade5d40dd7d834fbc885d332ff2802a33c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dadc9adb1cf821b4d5d63f6844b9ade5d40dd7d834fbc885d332ff2802a33c9", kill_on_drop: false }`
[INFO] [stdout] 4dadc9adb1cf821b4d5d63f6844b9ade5d40dd7d834fbc885d332ff2802a33c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd093f463177729967aba022c6d5ed7b92054672cd48adc9e7d83872e4445ae7
[INFO] running `Command { std: "docker" "start" "-a" "cd093f463177729967aba022c6d5ed7b92054672cd48adc9e7d83872e4445ae7", kill_on_drop: false }`
[INFO] [stderr]    Compiling metatrait v0.0.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Phantoms` is never constructed
[INFO] [stdout]  --> examples/phantoms.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Phantoms;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "cd093f463177729967aba022c6d5ed7b92054672cd48adc9e7d83872e4445ae7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd093f463177729967aba022c6d5ed7b92054672cd48adc9e7d83872e4445ae7", kill_on_drop: false }`
[INFO] [stdout] cd093f463177729967aba022c6d5ed7b92054672cd48adc9e7d83872e4445ae7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b4a288e55b2362a616cbae9edbefd84422c97d20ba75169276fbdffe35a78fcf
[INFO] running `Command { std: "docker" "start" "-a" "b4a288e55b2362a616cbae9edbefd84422c97d20ba75169276fbdffe35a78fcf", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Phantoms` is never constructed
[INFO] [stderr]  --> examples/phantoms.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct Phantoms;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `metatrait` (example "phantoms") generated 1 warning
[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/metatrait-d8382936f7a90c01)
[INFO] [stdout] running 6 tests
[INFO] [stdout] test cat::instances::composition::test::test ... ok
[INFO] [stdout] test cat::instances::futures::test::test ... ok
[INFO] [stdout] test cat::instances::option::test::test ... ok
[INFO] [stdout] test cat::instances::result::test::test ... ok
[INFO] [stdout] test cat::instances::verbatim::test::test ... ok
[INFO] [stdout] test cat::instances::lazy::test::test ... ok
[INFO] [stderr]    Doc-tests metatrait
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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] running `Command { std: "docker" "inspect" "b4a288e55b2362a616cbae9edbefd84422c97d20ba75169276fbdffe35a78fcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4a288e55b2362a616cbae9edbefd84422c97d20ba75169276fbdffe35a78fcf", kill_on_drop: false }`
[INFO] [stdout] b4a288e55b2362a616cbae9edbefd84422c97d20ba75169276fbdffe35a78fcf