[INFO] fetching crate prometools 0.2.2...
[INFO] testing prometools-0.2.2 against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate prometools 0.2.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate prometools 0.2.2
[INFO] finished tweaking crates.io crate prometools 0.2.2
[INFO] tweaked toml for crates.io crate prometools 0.2.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate prometools 0.2.2 on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] [stderr]       Adding prometheus-client v0.18.1 (available: v0.24.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.41
[INFO] [stderr]   Downloaded parking_lot v0.12.5
[INFO] [stderr]   Downloaded windows-link v0.2.1
[INFO] [stderr]   Downloaded prometheus-client-derive-text-encode v0.3.0
[INFO] [stderr]   Downloaded dtoa v1.0.10
[INFO] [stderr]   Downloaded redox_syscall v0.5.18
[INFO] [stderr]   Downloaded lock_api v0.4.14
[INFO] [stderr]   Downloaded prometheus-client v0.18.1
[INFO] [stderr]   Downloaded serde_derive v1.0.228
[INFO] [stderr]   Downloaded serde v1.0.228
[INFO] [stderr]   Downloaded parking_lot_core v0.9.12
[INFO] [stderr]   Downloaded serde_core v1.0.228
[INFO] [stderr]   Downloaded libc v0.2.177
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af7e4048209cee2851a7563d1f2bf6b77a11b136f54cfb1d0c375f1b6fb1e5c0
[INFO] running `Command { std: "docker" "start" "-a" "af7e4048209cee2851a7563d1f2bf6b77a11b136f54cfb1d0c375f1b6fb1e5c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af7e4048209cee2851a7563d1f2bf6b77a11b136f54cfb1d0c375f1b6fb1e5c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af7e4048209cee2851a7563d1f2bf6b77a11b136f54cfb1d0c375f1b6fb1e5c0", kill_on_drop: false }`
[INFO] [stdout] af7e4048209cee2851a7563d1f2bf6b77a11b136f54cfb1d0c375f1b6fb1e5c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3bf7110b2709ea5472f5f6bffe25854d73aaf5b1772efea5061c4c656c834d7
[INFO] running `Command { std: "docker" "start" "-a" "d3bf7110b2709ea5472f5f6bffe25854d73aaf5b1772efea5061c4c656c834d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling dtoa v1.0.10
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling prometheus-client-derive-text-encode v0.3.0
[INFO] [stderr]    Compiling prometheus-client v0.18.1
[INFO] [stderr]    Compiling prometools v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.16s
[INFO] running `Command { std: "docker" "inspect" "d3bf7110b2709ea5472f5f6bffe25854d73aaf5b1772efea5061c4c656c834d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3bf7110b2709ea5472f5f6bffe25854d73aaf5b1772efea5061c4c656c834d7", kill_on_drop: false }`
[INFO] [stdout] d3bf7110b2709ea5472f5f6bffe25854d73aaf5b1772efea5061c4c656c834d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d0465afffdd1e1ee21ce17ae0014f3c63996e17f11d12b982f01cfb4fdaa6cd
[INFO] running `Command { std: "docker" "start" "-a" "8d0465afffdd1e1ee21ce17ae0014f3c63996e17f11d12b982f01cfb4fdaa6cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling prometools v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 50.25s
[INFO] running `Command { std: "docker" "inspect" "8d0465afffdd1e1ee21ce17ae0014f3c63996e17f11d12b982f01cfb4fdaa6cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d0465afffdd1e1ee21ce17ae0014f3c63996e17f11d12b982f01cfb4fdaa6cd", kill_on_drop: false }`
[INFO] [stdout] 8d0465afffdd1e1ee21ce17ae0014f3c63996e17f11d12b982f01cfb4fdaa6cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b6f4eeb475ee051853d2f17ae48c6b4cebe3f5f411990b433d2eb6f34b60058f
[INFO] running `Command { std: "docker" "start" "-a" "b6f4eeb475ee051853d2f17ae48c6b4cebe3f5f411990b433d2eb6f34b60058f", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running tests/histogram.rs (/opt/rustwide/target/debug/deps/histogram-3bf969b4d2b472c8)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test timer_resume_stop ... ok
[INFO] [stdout] test timer_pause_stop ... ok
[INFO] [stdout] test timer_pause_resume_stop ... ok
[INFO] [stdout] test histogram ... ok
[INFO] [stdout] test timer_stop_and_discard ... ok
[INFO] [stdout] test timer_pause_pause_stop ... ok
[INFO] [stdout] test timer_pause_resume_pause_stop ... ok
[INFO] [stdout] test timer_resume_drop ... ok
[INFO] [stdout] test timer_stop_and_record ... ok
[INFO] [stderr]    Doc-tests prometools
[INFO] [stdout] test timer_pause_resume_pause_resume_stop ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.28s
[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" "b6f4eeb475ee051853d2f17ae48c6b4cebe3f5f411990b433d2eb6f34b60058f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6f4eeb475ee051853d2f17ae48c6b4cebe3f5f411990b433d2eb6f34b60058f", kill_on_drop: false }`
[INFO] [stdout] b6f4eeb475ee051853d2f17ae48c6b4cebe3f5f411990b433d2eb6f34b60058f