[INFO] fetching crate ratchet 1.2.0...
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] crate ratchet 1.2.0 is already in cache
[INFO] checking ratchet-1.2.0 against master#ea6ab1bd845790fb31ba790d2c7aec898f89fe62 for pr-99880
[INFO] extracting crate ratchet 1.2.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate ratchet 1.2.0 on toolchain ea6ab1bd845790fb31ba790d2c7aec898f89fe62
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ratchet 1.2.0
[INFO] finished tweaking crates.io crate ratchet 1.2.0
[INFO] tweaked toml for crates.io crate ratchet 1.2.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "fetch" "--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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "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] 1ef93c0fed4080628eedbfe2019e6687059b4215d5eb956f9bdf89ef7a7725d9
[INFO] running `Command { std: "docker" "start" "-a" "1ef93c0fed4080628eedbfe2019e6687059b4215d5eb956f9bdf89ef7a7725d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ef93c0fed4080628eedbfe2019e6687059b4215d5eb956f9bdf89ef7a7725d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ef93c0fed4080628eedbfe2019e6687059b4215d5eb956f9bdf89ef7a7725d9", kill_on_drop: false }`
[INFO] [stdout] 1ef93c0fed4080628eedbfe2019e6687059b4215d5eb956f9bdf89ef7a7725d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ee620f95bca3427bd0c24ce723db0af8ed521e1b1cdd993fdffbd42bbe12feb
[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" "4ee620f95bca3427bd0c24ce723db0af8ed521e1b1cdd993fdffbd42bbe12feb", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling serde v1.0.142
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling clear_on_drop v0.2.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking hkdf v0.8.0
[INFO] [stderr]     Checking ratchet v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.08s
[INFO] running `Command { std: "docker" "inspect" "4ee620f95bca3427bd0c24ce723db0af8ed521e1b1cdd993fdffbd42bbe12feb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ee620f95bca3427bd0c24ce723db0af8ed521e1b1cdd993fdffbd42bbe12feb", kill_on_drop: false }`
[INFO] [stdout] 4ee620f95bca3427bd0c24ce723db0af8ed521e1b1cdd993fdffbd42bbe12feb