[INFO] fetching crate fstrings-proc-macro 0.2.3...
[INFO] testing fstrings-proc-macro-0.2.3 against 1.49.0 for beta-1.50-1
[INFO] extracting crate fstrings-proc-macro 0.2.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate fstrings-proc-macro 0.2.3 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 fstrings-proc-macro 0.2.3
[INFO] finished tweaking crates.io crate fstrings-proc-macro 0.2.3
[INFO] tweaked toml for crates.io crate fstrings-proc-macro 0.2.3 written to /workspace/builds/worker-2/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d5014e5abcec7e170ac4390718cd86e026eeb1a4f9386993b9e341575d739ad1
[INFO] running `Command { std: "docker" "start" "-a" "d5014e5abcec7e170ac4390718cd86e026eeb1a4f9386993b9e341575d739ad1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5014e5abcec7e170ac4390718cd86e026eeb1a4f9386993b9e341575d739ad1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5014e5abcec7e170ac4390718cd86e026eeb1a4f9386993b9e341575d739ad1", kill_on_drop: false }`
[INFO] [stdout] d5014e5abcec7e170ac4390718cd86e026eeb1a4f9386993b9e341575d739ad1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 36a8f99b3f4318c6e57b83907509e09db81f132caa3d4d9b4e3628d98e619af0
[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" "36a8f99b3f4318c6e57b83907509e09db81f132caa3d4d9b4e3628d98e619af0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling fstrings-proc-macro v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.97s
[INFO] running `Command { std: "docker" "inspect" "36a8f99b3f4318c6e57b83907509e09db81f132caa3d4d9b4e3628d98e619af0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36a8f99b3f4318c6e57b83907509e09db81f132caa3d4d9b4e3628d98e619af0", kill_on_drop: false }`
[INFO] [stdout] 36a8f99b3f4318c6e57b83907509e09db81f132caa3d4d9b4e3628d98e619af0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 25823cf801aaa8eb409390fd4c35d18b9e803522b867e1c4bebe897daf536ac0
[INFO] running `Command { std: "docker" "start" "-a" "25823cf801aaa8eb409390fd4c35d18b9e803522b867e1c4bebe897daf536ac0", kill_on_drop: false }`
[INFO] [stderr]    Compiling fstrings-proc-macro v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "25823cf801aaa8eb409390fd4c35d18b9e803522b867e1c4bebe897daf536ac0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25823cf801aaa8eb409390fd4c35d18b9e803522b867e1c4bebe897daf536ac0", kill_on_drop: false }`
[INFO] [stdout] 25823cf801aaa8eb409390fd4c35d18b9e803522b867e1c4bebe897daf536ac0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 8f5f72eaefbb7f4e14fe69331f4a6c4685da5738dbba185393f3502a955ffbda
[INFO] running `Command { std: "docker" "start" "-a" "8f5f72eaefbb7f4e14fe69331f4a6c4685da5738dbba185393f3502a955ffbda", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fstrings_proc_macro-9a4b7f5343d35f8c
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fstrings-proc-macro
[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" "8f5f72eaefbb7f4e14fe69331f4a6c4685da5738dbba185393f3502a955ffbda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f5f72eaefbb7f4e14fe69331f4a6c4685da5738dbba185393f3502a955ffbda", kill_on_drop: false }`
[INFO] [stdout] 8f5f72eaefbb7f4e14fe69331f4a6c4685da5738dbba185393f3502a955ffbda