[INFO] fetching crate flexbuffers 2.0.0...
[INFO] testing flexbuffers-2.0.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate flexbuffers 2.0.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate flexbuffers 2.0.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flexbuffers 2.0.0
[INFO] finished tweaking crates.io crate flexbuffers 2.0.0
[INFO] tweaked toml for crates.io crate flexbuffers 2.0.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c73d058c0c28743c3d7ac9195850b89baf9ab1cad674816d2e6261a9cef0b195
[INFO] running `Command { std: "docker" "start" "-a" "c73d058c0c28743c3d7ac9195850b89baf9ab1cad674816d2e6261a9cef0b195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c73d058c0c28743c3d7ac9195850b89baf9ab1cad674816d2e6261a9cef0b195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c73d058c0c28743c3d7ac9195850b89baf9ab1cad674816d2e6261a9cef0b195", kill_on_drop: false }`
[INFO] [stdout] c73d058c0c28743c3d7ac9195850b89baf9ab1cad674816d2e6261a9cef0b195
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da529cd6668d4ee8d57e1ac48778a94409364daac0fa9ab70095ecc958f05748
[INFO] running `Command { std: "docker" "start" "-a" "da529cd6668d4ee8d57e1ac48778a94409364daac0fa9ab70095ecc958f05748", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling num_enum_derive v0.5.7
[INFO] [stderr]    Compiling num_enum v0.5.7
[INFO] [stderr]    Compiling flexbuffers v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.97s
[INFO] running `Command { std: "docker" "inspect" "da529cd6668d4ee8d57e1ac48778a94409364daac0fa9ab70095ecc958f05748", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da529cd6668d4ee8d57e1ac48778a94409364daac0fa9ab70095ecc958f05748", kill_on_drop: false }`
[INFO] [stdout] da529cd6668d4ee8d57e1ac48778a94409364daac0fa9ab70095ecc958f05748
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9c65b82c4dde32269fad433bab474fa8a3596477d819bc4662add20c542c42f
[INFO] running `Command { std: "docker" "start" "-a" "a9c65b82c4dde32269fad433bab474fa8a3596477d819bc4662add20c542c42f", kill_on_drop: false }`
[INFO] [stderr]    Compiling flexbuffers v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.38s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/flexbuffers-c9752353e4c03e9e)
[INFO] running `Command { std: "docker" "inspect" "a9c65b82c4dde32269fad433bab474fa8a3596477d819bc4662add20c542c42f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9c65b82c4dde32269fad433bab474fa8a3596477d819bc4662add20c542c42f", kill_on_drop: false }`
[INFO] [stdout] a9c65b82c4dde32269fad433bab474fa8a3596477d819bc4662add20c542c42f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ec0822c56849765087efa38658411f223af800ffcfb5b95f121edaeebb4d005a
[INFO] running `Command { std: "docker" "start" "-a" "ec0822c56849765087efa38658411f223af800ffcfb5b95f121edaeebb4d005a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/flexbuffers-c9752353e4c03e9e)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flexbuffers
[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] running `Command { std: "docker" "inspect" "ec0822c56849765087efa38658411f223af800ffcfb5b95f121edaeebb4d005a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec0822c56849765087efa38658411f223af800ffcfb5b95f121edaeebb4d005a", kill_on_drop: false }`
[INFO] [stdout] ec0822c56849765087efa38658411f223af800ffcfb5b95f121edaeebb4d005a