[INFO] fetching crate secret-tree 0.2.0...
[INFO] checking secret-tree-0.2.0 against try#9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c for pr-79472
[INFO] extracting crate secret-tree 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate secret-tree 0.2.0 on toolchain 9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate secret-tree 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate secret-tree 0.2.0
[INFO] tweaked toml for crates.io crate secret-tree 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate secret-tree 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v0.15.39
[INFO] [stderr]   Downloaded serde_derive v1.0.94
[INFO] [stderr]   Downloaded block-padding v0.1.4
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.15
[INFO] [stderr]   Downloaded quote v0.6.12
[INFO] [stderr]   Downloaded c2-chacha v0.2.2
[INFO] [stderr]   Downloaded getrandom v0.1.6
[INFO] [stderr]   Downloaded rand_core v0.4.0
[INFO] [stderr]   Downloaded serde v1.0.94
[INFO] [stderr]   Downloaded rand v0.7.0
[INFO] [stderr]   Downloaded arrayvec v0.4.10
[INFO] [stderr]   Downloaded constant_time_eq v0.1.3
[INFO] [stderr]   Downloaded cfg-if v0.1.9
[INFO] [stderr]   Downloaded rand_core v0.5.0
[INFO] [stderr]   Downloaded spin v0.5.0
[INFO] [stderr]   Downloaded rand_chacha v0.2.0
[INFO] [stderr]   Downloaded toml v0.5.1
[INFO] [stderr]   Downloaded curve25519-dalek v1.2.1
[INFO] [stderr]   Downloaded opaque-debug v0.2.2
[INFO] [stderr]   Downloaded nodrop v0.1.13
[INFO] [stderr]   Downloaded backtrace v0.3.32
[INFO] [stderr]   Downloaded sha2 v0.8.0
[INFO] [stderr]   Downloaded clear_on_drop v0.2.3
[INFO] [stderr]   Downloaded pwbox v0.2.1
[INFO] [stderr]   Downloaded ed25519-dalek v1.0.0-pre.1
[INFO] [stderr]   Downloaded backtrace-sys v0.1.30
[INFO] [stderr]   Downloaded typenum v1.10.0
[INFO] [stderr]   Downloaded cc v1.0.37
[INFO] [stderr]   Downloaded failure v0.1.5
[INFO] [stderr]   Downloaded hex-buffer-serde v0.2.0
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.5
[INFO] [stderr]   Downloaded autocfg v0.1.4
[INFO] [stderr]   Downloaded subtle v2.1.0
[INFO] [stderr]   Downloaded libc v0.2.58
[INFO] [stderr]   Downloaded failure_derive v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "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] 9f20e3c2d3bb911ca927f0cb6a0df59294737be06ca997c9445d5523a0e947f6
[INFO] running `Command { std: "docker" "start" "-a" "9f20e3c2d3bb911ca927f0cb6a0df59294737be06ca997c9445d5523a0e947f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f20e3c2d3bb911ca927f0cb6a0df59294737be06ca997c9445d5523a0e947f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f20e3c2d3bb911ca927f0cb6a0df59294737be06ca997c9445d5523a0e947f6", kill_on_drop: false }`
[INFO] [stdout] 9f20e3c2d3bb911ca927f0cb6a0df59294737be06ca997c9445d5523a0e947f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5f7da9d3390ef9a7c173530b9e538887c4492cef8d9d25e00c7dafb11dfdf4e
[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" "e5f7da9d3390ef9a7c173530b9e538887c4492cef8d9d25e00c7dafb11dfdf4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]    Compiling subtle v2.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking opaque-debug v0.2.2
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.2.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking getrandom v0.1.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.30
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]    Compiling curve25519-dalek v1.2.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking backtrace v0.3.32
[INFO] [stderr]     Checking secret-tree v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking hex-buffer-serde v0.2.0
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking toml v0.5.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.94
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.1
[INFO] [stderr]     Checking pwbox v0.2.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.42s
[INFO] running `Command { std: "docker" "inspect" "e5f7da9d3390ef9a7c173530b9e538887c4492cef8d9d25e00c7dafb11dfdf4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5f7da9d3390ef9a7c173530b9e538887c4492cef8d9d25e00c7dafb11dfdf4e", kill_on_drop: false }`
[INFO] [stdout] e5f7da9d3390ef9a7c173530b9e538887c4492cef8d9d25e00c7dafb11dfdf4e