[INFO] fetching crate ouroboros 0.5.1...
[INFO] testing ouroboros-0.5.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate ouroboros 0.5.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate ouroboros 0.5.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ouroboros 0.5.1
[INFO] finished tweaking crates.io crate ouroboros 0.5.1
[INFO] tweaked toml for crates.io crate ouroboros 0.5.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2021-01-01" "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] f0a5080055ec55f697d084637d99e13d3f5d34d0e5a38f24dc5f72a21fe5b0ad
[INFO] running `Command { std: "docker" "start" "-a" "f0a5080055ec55f697d084637d99e13d3f5d34d0e5a38f24dc5f72a21fe5b0ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0a5080055ec55f697d084637d99e13d3f5d34d0e5a38f24dc5f72a21fe5b0ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0a5080055ec55f697d084637d99e13d3f5d34d0e5a38f24dc5f72a21fe5b0ad", kill_on_drop: false }`
[INFO] [stdout] f0a5080055ec55f697d084637d99e13d3f5d34d0e5a38f24dc5f72a21fe5b0ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2021-01-01" "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] 40e844077c11fbed87860b617dfd6edf8ce4fd62a0334393d051eac0e1bef6df
[INFO] running `Command { std: "docker" "start" "-a" "40e844077c11fbed87860b617dfd6edf8ce4fd62a0334393d051eac0e1bef6df", kill_on_drop: false }`
[INFO] [stderr]    Compiling ouroboros_macro v0.5.1
[INFO] [stderr]    Compiling ouroboros v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.01s
[INFO] running `Command { std: "docker" "inspect" "40e844077c11fbed87860b617dfd6edf8ce4fd62a0334393d051eac0e1bef6df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40e844077c11fbed87860b617dfd6edf8ce4fd62a0334393d051eac0e1bef6df", kill_on_drop: false }`
[INFO] [stdout] 40e844077c11fbed87860b617dfd6edf8ce4fd62a0334393d051eac0e1bef6df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 410f1d6a7657cdb946ec28133a41e2906709682e31c5ceba020937d3851780d8
[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" "410f1d6a7657cdb946ec28133a41e2906709682e31c5ceba020937d3851780d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling ouroboros v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "410f1d6a7657cdb946ec28133a41e2906709682e31c5ceba020937d3851780d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "410f1d6a7657cdb946ec28133a41e2906709682e31c5ceba020937d3851780d8", kill_on_drop: false }`
[INFO] [stdout] 410f1d6a7657cdb946ec28133a41e2906709682e31c5ceba020937d3851780d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f73c4091b5ebdde65a2a7e9d1d22c23bd5b8f53f810b8834fcb9e5565d8b5fb9
[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" "f73c4091b5ebdde65a2a7e9d1d22c23bd5b8f53f810b8834fcb9e5565d8b5fb9", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ouroboros-65206db857ad5a5e
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ouroboros
[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 2 tests
[INFO] [stdout] test src/lib.rs - self_referencing (line 10) ... ok
[INFO] [stdout] test src/lib.rs - self_referencing (line 75) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.77s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f73c4091b5ebdde65a2a7e9d1d22c23bd5b8f53f810b8834fcb9e5565d8b5fb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f73c4091b5ebdde65a2a7e9d1d22c23bd5b8f53f810b8834fcb9e5565d8b5fb9", kill_on_drop: false }`
[INFO] [stdout] f73c4091b5ebdde65a2a7e9d1d22c23bd5b8f53f810b8834fcb9e5565d8b5fb9