[INFO] cloning repository https://github.com/cyplo/rustback
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cyplo/rustback" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyplo%2Frustback", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyplo%2Frustback'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0033bbe669926554c06d9abe100ecf2a5f3a5de
[INFO] checking cyplo/rustback against try#075992eda207e1647b699c8c8ada67b32ce7b115 for pr-77271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyplo%2Frustback" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cyplo/rustback on toolchain 075992eda207e1647b699c8c8ada67b32ce7b115
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cyplo/rustback
[INFO] finished tweaking git repo https://github.com/cyplo/rustback
[INFO] tweaked toml for git repo https://github.com/cyplo/rustback written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/cyplo/rustback already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cargo-husky v1.4.0
[INFO] [stderr]   Downloaded half v1.3.0
[INFO] [stderr]   Downloaded sha2 v0.8.0
[INFO] [stderr]   Downloaded serde_cbor v0.10.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "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] a288df34ab03867306c8eb6d5d42b26a9d2d5fb0df50fd000c9a3b6450b664f6
[INFO] running `Command { std: "docker" "start" "-a" "a288df34ab03867306c8eb6d5d42b26a9d2d5fb0df50fd000c9a3b6450b664f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a288df34ab03867306c8eb6d5d42b26a9d2d5fb0df50fd000c9a3b6450b664f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a288df34ab03867306c8eb6d5d42b26a9d2d5fb0df50fd000c9a3b6450b664f6", kill_on_drop: false }`
[INFO] [stdout] a288df34ab03867306c8eb6d5d42b26a9d2d5fb0df50fd000c9a3b6450b664f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36e803efe01b59ba48bce611120f7b96e01f3f9b07a865dc351c8c7413d517bb
[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" "36e803efe01b59ba48bce611120f7b96e01f3f9b07a865dc351c8c7413d517bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling proc-macro2 v1.0.2
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking half v1.3.0
[INFO] [stderr]    Compiling cargo-husky v1.4.0
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking block-padding v0.1.4
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking backtrace v0.3.35
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde_cbor v0.10.1
[INFO] [stderr]     Checking bakare v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.99s
[INFO] running `Command { std: "docker" "inspect" "36e803efe01b59ba48bce611120f7b96e01f3f9b07a865dc351c8c7413d517bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36e803efe01b59ba48bce611120f7b96e01f3f9b07a865dc351c8c7413d517bb", kill_on_drop: false }`
[INFO] [stdout] 36e803efe01b59ba48bce611120f7b96e01f3f9b07a865dc351c8c7413d517bb