[INFO] fetching crate gen-z 0.1.0...
[INFO] testing gen-z-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate gen-z 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate gen-z 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gen-z 0.1.0
[INFO] finished tweaking crates.io crate gen-z 0.1.0
[INFO] tweaked toml for crates.io crate gen-z 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e2f04fb9c3f9fd357ab0cafefa028916c930ec5a1d05a0671714fd7198c83a1
[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" "9e2f04fb9c3f9fd357ab0cafefa028916c930ec5a1d05a0671714fd7198c83a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e2f04fb9c3f9fd357ab0cafefa028916c930ec5a1d05a0671714fd7198c83a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e2f04fb9c3f9fd357ab0cafefa028916c930ec5a1d05a0671714fd7198c83a1", kill_on_drop: false }`
[INFO] [stdout] 9e2f04fb9c3f9fd357ab0cafefa028916c930ec5a1d05a0671714fd7198c83a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", 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] 38558359182d925939402e57e7f8818efa6a46704ae89bfd24ef7d2649bda181
[INFO] running `Command { std: "docker" "start" "-a" "38558359182d925939402e57e7f8818efa6a46704ae89bfd24ef7d2649bda181", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling futures-task v0.3.8
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling pin-project v1.0.2
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling gen-z v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.66s
[INFO] running `Command { std: "docker" "inspect" "38558359182d925939402e57e7f8818efa6a46704ae89bfd24ef7d2649bda181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38558359182d925939402e57e7f8818efa6a46704ae89bfd24ef7d2649bda181", kill_on_drop: false }`
[INFO] [stdout] 38558359182d925939402e57e7f8818efa6a46704ae89bfd24ef7d2649bda181
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71c5c74ae52a1af3442bef781aedfe90ddb8a25aeb2f7a7cf47a0bc56fa9efcd
[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" "71c5c74ae52a1af3442bef781aedfe90ddb8a25aeb2f7a7cf47a0bc56fa9efcd", kill_on_drop: false }`
[INFO] [stderr]    Compiling gen-z v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "71c5c74ae52a1af3442bef781aedfe90ddb8a25aeb2f7a7cf47a0bc56fa9efcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71c5c74ae52a1af3442bef781aedfe90ddb8a25aeb2f7a7cf47a0bc56fa9efcd", kill_on_drop: false }`
[INFO] [stdout] 71c5c74ae52a1af3442bef781aedfe90ddb8a25aeb2f7a7cf47a0bc56fa9efcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3109a2e5cb503c6e0ce55b0a52def89d9d14758728c5f8bf2003d4e304340223
[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" "3109a2e5cb503c6e0ce55b0a52def89d9d14758728c5f8bf2003d4e304340223", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/gen_z-7a8772aa911da0c9
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests gen-z
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3109a2e5cb503c6e0ce55b0a52def89d9d14758728c5f8bf2003d4e304340223", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3109a2e5cb503c6e0ce55b0a52def89d9d14758728c5f8bf2003d4e304340223", kill_on_drop: false }`
[INFO] [stdout] 3109a2e5cb503c6e0ce55b0a52def89d9d14758728c5f8bf2003d4e304340223