[INFO] fetching crate concat_strs 1.0.2...
[INFO] testing concat_strs-1.0.2 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate concat_strs 1.0.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate concat_strs 1.0.2 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concat_strs 1.0.2
[INFO] finished tweaking crates.io crate concat_strs 1.0.2
[INFO] tweaked toml for crates.io crate concat_strs 1.0.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] f883aa0506de3718e2505af5f3c4522bdd8ca789f0ca75324e3ea12df9dea778
[INFO] running `Command { std: "docker" "start" "-a" "f883aa0506de3718e2505af5f3c4522bdd8ca789f0ca75324e3ea12df9dea778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f883aa0506de3718e2505af5f3c4522bdd8ca789f0ca75324e3ea12df9dea778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f883aa0506de3718e2505af5f3c4522bdd8ca789f0ca75324e3ea12df9dea778", kill_on_drop: false }`
[INFO] [stdout] f883aa0506de3718e2505af5f3c4522bdd8ca789f0ca75324e3ea12df9dea778
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] c79b787f9d1b8bd84317e3104efec7c62e3a194597e388e9e3d78ec0aeeb5e53
[INFO] running `Command { std: "docker" "start" "-a" "c79b787f9d1b8bd84317e3104efec7c62e3a194597e388e9e3d78ec0aeeb5e53", kill_on_drop: false }`
[INFO] [stderr]    Compiling concat_strs_impl v1.0.1
[INFO] [stderr]    Compiling concat_strs v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.45s
[INFO] running `Command { std: "docker" "inspect" "c79b787f9d1b8bd84317e3104efec7c62e3a194597e388e9e3d78ec0aeeb5e53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c79b787f9d1b8bd84317e3104efec7c62e3a194597e388e9e3d78ec0aeeb5e53", kill_on_drop: false }`
[INFO] [stdout] c79b787f9d1b8bd84317e3104efec7c62e3a194597e388e9e3d78ec0aeeb5e53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec0bf932afbbdee181889fd576942ab01ce9c14a0bdc5692dff1476d16464f95
[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" "ec0bf932afbbdee181889fd576942ab01ce9c14a0bdc5692dff1476d16464f95", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling concat_strs v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 21.00s
[INFO] [stderr]   Executable unittests lib.rs (/opt/rustwide/target/debug/deps/concat_strs-7bee669f8ccb2dc8)
[INFO] [stderr]   Executable tests/main.rs (/opt/rustwide/target/debug/deps/main-a59879e3a26555b5)
[INFO] running `Command { std: "docker" "inspect" "ec0bf932afbbdee181889fd576942ab01ce9c14a0bdc5692dff1476d16464f95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec0bf932afbbdee181889fd576942ab01ce9c14a0bdc5692dff1476d16464f95", kill_on_drop: false }`
[INFO] [stdout] ec0bf932afbbdee181889fd576942ab01ce9c14a0bdc5692dff1476d16464f95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 4b40e0d6bfadbd607e0a12707b362b97e13843950494af1a189b584f3af509df
[INFO] running `Command { std: "docker" "start" "-a" "4b40e0d6bfadbd607e0a12707b362b97e13843950494af1a189b584f3af509df", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests lib.rs (/opt/rustwide/target/debug/deps/concat_strs-7bee669f8ccb2dc8)
[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] [stderr]      Running tests/main.rs (/opt/rustwide/target/debug/deps/main-a59879e3a26555b5)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test simple ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests concat_strs
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test lib.rs - concat_strs (line 41) ... ok
[INFO] [stdout] test lib.rs - (line 6) ... ok
[INFO] [stdout] test lib.rs - concat_strs (line 27) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4b40e0d6bfadbd607e0a12707b362b97e13843950494af1a189b584f3af509df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b40e0d6bfadbd607e0a12707b362b97e13843950494af1a189b584f3af509df", kill_on_drop: false }`
[INFO] [stdout] 4b40e0d6bfadbd607e0a12707b362b97e13843950494af1a189b584f3af509df