[INFO] fetching crate trace_caller 0.2.0...
[INFO] testing trace_caller-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate trace_caller 0.2.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate trace_caller 0.2.0 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 trace_caller 0.2.0
[INFO] finished tweaking crates.io crate trace_caller 0.2.0
[INFO] tweaked toml for crates.io crate trace_caller 0.2.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate trace_caller 0.2.0 already has a lockfile, it will not be regenerated
[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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a2f10962ae9b5779c33d3d5c33cd90b7cc16b8650b31b5c06c8d496cdc011993
[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" "a2f10962ae9b5779c33d3d5c33cd90b7cc16b8650b31b5c06c8d496cdc011993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2f10962ae9b5779c33d3d5c33cd90b7cc16b8650b31b5c06c8d496cdc011993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2f10962ae9b5779c33d3d5c33cd90b7cc16b8650b31b5c06c8d496cdc011993", kill_on_drop: false }`
[INFO] [stdout] a2f10962ae9b5779c33d3d5c33cd90b7cc16b8650b31b5c06c8d496cdc011993
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17572d7d8c435e5009131f6ce444f8646d33a944489a6368ea1b5898f1e830d6
[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" "17572d7d8c435e5009131f6ce444f8646d33a944489a6368ea1b5898f1e830d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling trace_caller_macro v0.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.34
[INFO] [stderr]    Compiling backtrace v0.3.45
[INFO] [stderr]    Compiling trace_caller v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.16s
[INFO] running `Command { std: "docker" "inspect" "17572d7d8c435e5009131f6ce444f8646d33a944489a6368ea1b5898f1e830d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17572d7d8c435e5009131f6ce444f8646d33a944489a6368ea1b5898f1e830d6", kill_on_drop: false }`
[INFO] [stdout] 17572d7d8c435e5009131f6ce444f8646d33a944489a6368ea1b5898f1e830d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fdab080a089eaeafa3a5c1d336404d8a7a9328257288a1f8c4e1ee02540c0d44
[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" "fdab080a089eaeafa3a5c1d336404d8a7a9328257288a1f8c4e1ee02540c0d44", kill_on_drop: false }`
[INFO] [stderr]    Compiling trace_caller v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "fdab080a089eaeafa3a5c1d336404d8a7a9328257288a1f8c4e1ee02540c0d44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdab080a089eaeafa3a5c1d336404d8a7a9328257288a1f8c4e1ee02540c0d44", kill_on_drop: false }`
[INFO] [stdout] fdab080a089eaeafa3a5c1d336404d8a7a9328257288a1f8c4e1ee02540c0d44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", 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] 4b65fe35300e5af1dcf17e39e8bf11b6686085f9b2f8359bf12815bbe8d5b108
[INFO] running `Command { std: "docker" "start" "-a" "4b65fe35300e5af1dcf17e39e8bf11b6686085f9b2f8359bf12815bbe8d5b108", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/trace_caller-235b79aee0f218a1
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests trace_caller
[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" "4b65fe35300e5af1dcf17e39e8bf11b6686085f9b2f8359bf12815bbe8d5b108", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b65fe35300e5af1dcf17e39e8bf11b6686085f9b2f8359bf12815bbe8d5b108", kill_on_drop: false }`
[INFO] [stdout] 4b65fe35300e5af1dcf17e39e8bf11b6686085f9b2f8359bf12815bbe8d5b108