[INFO] updating cached repository https://github.com/althea-mesh/num256_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bff01cd2a9722edfe6ae057b5a3ec2675c977aa6
[INFO] checking althea-mesh/num256_rs against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falthea-mesh%2Fnum256_rs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/althea-mesh/num256_rs on toolchain 0ab79c4b48ad19260fa46623f452c1b403a360e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/althea-mesh/num256_rs
[INFO] finished tweaking git repo https://github.com/althea-mesh/num256_rs
[INFO] tweaked toml for git repo https://github.com/althea-mesh/num256_rs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "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] 63f6eb2945a7e2748286b948e9931907a2ab815b99de2330e3cf046ef3846626
[INFO] running `Command { std: "docker" "start" "-a" "63f6eb2945a7e2748286b948e9931907a2ab815b99de2330e3cf046ef3846626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63f6eb2945a7e2748286b948e9931907a2ab815b99de2330e3cf046ef3846626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63f6eb2945a7e2748286b948e9931907a2ab815b99de2330e3cf046ef3846626", kill_on_drop: false }`
[INFO] [stdout] 63f6eb2945a7e2748286b948e9931907a2ab815b99de2330e3cf046ef3846626
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f833d9eda4e32ad4da00b65ddcc6df8feba491d5e12d01bf3027d5e4793c806
[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" "9f833d9eda4e32ad4da00b65ddcc6df8feba491d5e12d01bf3027d5e4793c806", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking miniz_oxide v0.4.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking num256 v0.2.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.61s
[INFO] running `Command { std: "docker" "inspect" "9f833d9eda4e32ad4da00b65ddcc6df8feba491d5e12d01bf3027d5e4793c806", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f833d9eda4e32ad4da00b65ddcc6df8feba491d5e12d01bf3027d5e4793c806", kill_on_drop: false }`
[INFO] [stdout] 9f833d9eda4e32ad4da00b65ddcc6df8feba491d5e12d01bf3027d5e4793c806