[INFO] fetching crate zfc 0.4.7...
[INFO] testing zfc-0.4.7 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate zfc 0.4.7 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate zfc 0.4.7
[INFO] finished tweaking crates.io crate zfc 0.4.7
[INFO] tweaked toml for crates.io crate zfc 0.4.7 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zfc 0.4.7 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zfc 0.4.7 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1d4278cdcf77fbb13d8b63006db2466a5f2f774b4b5e8cf674754eaaa6e2801
[INFO] running `Command { std: "docker" "start" "-a" "c1d4278cdcf77fbb13d8b63006db2466a5f2f774b4b5e8cf674754eaaa6e2801", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1d4278cdcf77fbb13d8b63006db2466a5f2f774b4b5e8cf674754eaaa6e2801", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1d4278cdcf77fbb13d8b63006db2466a5f2f774b4b5e8cf674754eaaa6e2801", kill_on_drop: false }`
[INFO] [stdout] c1d4278cdcf77fbb13d8b63006db2466a5f2f774b4b5e8cf674754eaaa6e2801
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b2bfc235c3f5557cd9c982b2cd66d934263d3763ab7693f24860983a27551ff
[INFO] running `Command { std: "docker" "start" "-a" "1b2bfc235c3f5557cd9c982b2cd66d934263d3763ab7693f24860983a27551ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling zfc v0.4.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.31s
[INFO] running `Command { std: "docker" "inspect" "1b2bfc235c3f5557cd9c982b2cd66d934263d3763ab7693f24860983a27551ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b2bfc235c3f5557cd9c982b2cd66d934263d3763ab7693f24860983a27551ff", kill_on_drop: false }`
[INFO] [stdout] 1b2bfc235c3f5557cd9c982b2cd66d934263d3763ab7693f24860983a27551ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca72966cabbc1a6de867a63b36c681edb5afa4ee384cb8ba79f1b885b2b43899
[INFO] running `Command { std: "docker" "start" "-a" "ca72966cabbc1a6de867a63b36c681edb5afa4ee384cb8ba79f1b885b2b43899", kill_on_drop: false }`
[INFO] [stderr]    Compiling zfc v0.4.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "ca72966cabbc1a6de867a63b36c681edb5afa4ee384cb8ba79f1b885b2b43899", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca72966cabbc1a6de867a63b36c681edb5afa4ee384cb8ba79f1b885b2b43899", kill_on_drop: false }`
[INFO] [stdout] ca72966cabbc1a6de867a63b36c681edb5afa4ee384cb8ba79f1b885b2b43899
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 304c818c3be89cee0dd6b0d188e82a15889819bf93bbd9710ff0308c7d0e715a
[INFO] running `Command { std: "docker" "start" "-a" "304c818c3be89cee0dd6b0d188e82a15889819bf93bbd9710ff0308c7d0e715a", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/zfc-22ab1214bf70daa2)
[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 zfc
[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" "304c818c3be89cee0dd6b0d188e82a15889819bf93bbd9710ff0308c7d0e715a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "304c818c3be89cee0dd6b0d188e82a15889819bf93bbd9710ff0308c7d0e715a", kill_on_drop: false }`
[INFO] [stdout] 304c818c3be89cee0dd6b0d188e82a15889819bf93bbd9710ff0308c7d0e715a