[INFO] fetching crate silver 1.1.0...
[INFO] checking silver-1.1.0 against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] extracting crate silver 1.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate silver 1.1.0 on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate silver 1.1.0
[INFO] finished tweaking crates.io crate silver 1.1.0
[INFO] tweaked toml for crates.io crate silver 1.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate silver 1.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "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] 4108e415adcec504dafc3aa5e60e139827a5631abfb817ad5bda1d124f9d2b75
[INFO] running `Command { std: "docker" "start" "-a" "4108e415adcec504dafc3aa5e60e139827a5631abfb817ad5bda1d124f9d2b75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4108e415adcec504dafc3aa5e60e139827a5631abfb817ad5bda1d124f9d2b75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4108e415adcec504dafc3aa5e60e139827a5631abfb817ad5bda1d124f9d2b75", kill_on_drop: false }`
[INFO] [stdout] 4108e415adcec504dafc3aa5e60e139827a5631abfb817ad5bda1d124f9d2b75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 278dcea70be098ff51fc2ec1777e8c3f8dbc91eed3ecc30aae594eed11e26b2f
[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" "278dcea70be098ff51fc2ec1777e8c3f8dbc91eed3ecc30aae594eed11e26b2f", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling libgit2-sys v0.8.2
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking users v0.9.1
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking git2 v0.9.2
[INFO] [stderr]     Checking silver v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `Command { std: "docker" "inspect" "278dcea70be098ff51fc2ec1777e8c3f8dbc91eed3ecc30aae594eed11e26b2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "278dcea70be098ff51fc2ec1777e8c3f8dbc91eed3ecc30aae594eed11e26b2f", kill_on_drop: false }`
[INFO] [stdout] 278dcea70be098ff51fc2ec1777e8c3f8dbc91eed3ecc30aae594eed11e26b2f