[INFO] fetching crate maver 0.1.0...
[INFO] checking maver-0.1.0 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] extracting crate maver 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate maver 0.1.0 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maver 0.1.0
[INFO] finished tweaking crates.io crate maver 0.1.0
[INFO] tweaked toml for crates.io crate maver 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate maver 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.5
[INFO] [stderr]   Downloaded wasi v0.5.0
[INFO] [stderr]   Downloaded c2-chacha v0.2.2
[INFO] [stderr]   Downloaded rand_distr v0.2.1
[INFO] [stderr]   Downloaded rand_core v0.5.0
[INFO] [stderr]   Downloaded rayon-core v1.5.0
[INFO] [stderr]   Downloaded nodrop v0.1.13
[INFO] [stderr]   Downloaded crossbeam-utils v0.6.6
[INFO] [stderr]   Downloaded crossbeam-queue v0.1.2
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.7.2
[INFO] [stderr]   Downloaded getrandom v0.1.10
[INFO] [stderr]   Downloaded crossbeam-deque v0.6.3
[INFO] [stderr]   Downloaded cfg-if v0.1.9
[INFO] [stderr]   Downloaded libc v0.2.62
[INFO] [stderr]   Downloaded rand_chacha v0.2.1
[INFO] [stderr]   Downloaded either v1.5.2
[INFO] [stderr]   Downloaded rand v0.7.0
[INFO] [stderr]   Downloaded ryu v1.0.0
[INFO] [stderr]   Downloaded serde_json v1.0.40
[INFO] [stderr]   Downloaded rayon v1.1.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.1
[INFO] [stderr]   Downloaded serde v1.0.99
[INFO] [stderr]   Downloaded scopeguard v1.0.0
[INFO] [stderr]   Downloaded serde_derive v1.0.99
[INFO] [stderr]   Downloaded arrayvec v0.4.11
[INFO] [stderr]   Downloaded quote v1.0.2
[INFO] [stderr]   Downloaded memoffset v0.5.1
[INFO] [stderr]   Downloaded num_cpus v1.10.1
[INFO] [stderr]   Downloaded itoa v0.4.4
[INFO] [stderr]   Downloaded syn v1.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2e6999f6a58b992a31e0cd183b4c229b9d9d6ebe1dec9f19bb0e6d7122df94c
[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" "e2e6999f6a58b992a31e0cd183b4c229b9d9d6ebe1dec9f19bb0e6d7122df94c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2e6999f6a58b992a31e0cd183b4c229b9d9d6ebe1dec9f19bb0e6d7122df94c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2e6999f6a58b992a31e0cd183b4c229b9d9d6ebe1dec9f19bb0e6d7122df94c", kill_on_drop: false }`
[INFO] [stdout] e2e6999f6a58b992a31e0cd183b4c229b9d9d6ebe1dec9f19bb0e6d7122df94c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 820ba7e6bd4bc8ad47faba44ea4da80f6a5c3d7870f9b124b26b9136a4e309b3
[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" "820ba7e6bd4bc8ad47faba44ea4da80f6a5c3d7870f9b124b26b9136a4e309b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling getrandom v0.1.10
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]     Checking rand_distr v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]     Checking serde v1.0.99
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking maver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.04s
[INFO] running `Command { std: "docker" "inspect" "820ba7e6bd4bc8ad47faba44ea4da80f6a5c3d7870f9b124b26b9136a4e309b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "820ba7e6bd4bc8ad47faba44ea4da80f6a5c3d7870f9b124b26b9136a4e309b3", kill_on_drop: false }`
[INFO] [stdout] 820ba7e6bd4bc8ad47faba44ea4da80f6a5c3d7870f9b124b26b9136a4e309b3