[INFO] fetching crate m-o 1.0.0...
[INFO] checking m-o-1.0.0 against try#55b3f428b4fac6790b1e8492e0b91ff2d80aec7c for pr-77035
[INFO] extracting crate m-o 1.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate m-o 1.0.0 on toolchain 55b3f428b4fac6790b1e8492e0b91ff2d80aec7c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate m-o 1.0.0
[INFO] finished tweaking crates.io crate m-o 1.0.0
[INFO] tweaked toml for crates.io crate m-o 1.0.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate m-o 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unreachable v1.0.0
[INFO] [stderr]   Downloaded structopt-derive v0.3.1
[INFO] [stderr]   Downloaded structopt v0.3.1
[INFO] [stderr]   Downloaded redox_termios v0.1.1
[INFO] [stderr]   Downloaded numtoa v0.1.0
[INFO] [stderr]   Downloaded nom v5.0.1
[INFO] [stderr]   Downloaded stackvector v1.0.6
[INFO] [stderr]   Downloaded lexical-core v0.4.3
[INFO] [stderr]   Downloaded termion v1.5.3
[INFO] [stderr]   Downloaded pretty v0.6.0
[INFO] [stderr]   Downloaded typed-arena v1.5.0
[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" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8e5633eb71b89cbec20d030c046efe693f1e52093c62aaf8e5952370dfc8727
[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" "c8e5633eb71b89cbec20d030c046efe693f1e52093c62aaf8e5952370dfc8727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8e5633eb71b89cbec20d030c046efe693f1e52093c62aaf8e5952370dfc8727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8e5633eb71b89cbec20d030c046efe693f1e52093c62aaf8e5952370dfc8727", kill_on_drop: false }`
[INFO] [stdout] c8e5633eb71b89cbec20d030c046efe693f1e52093c62aaf8e5952370dfc8727
[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" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 405054c44244ccb1602cc403d1657e302f8d6107ab12bf7d5165006b57b8ee95
[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" "405054c44244ccb1602cc403d1657e302f8d6107ab12bf7d5165006b57b8ee95", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]     Checking typed-arena v1.5.0
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking pretty v0.6.0
[INFO] [stderr]     Checking termion v1.5.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling nom v5.0.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling stackvector v1.0.6
[INFO] [stderr]    Compiling lexical-core v0.4.3
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.1
[INFO] [stderr]     Checking structopt v0.3.1
[INFO] [stderr]     Checking m-o v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.59s
[INFO] running `Command { std: "docker" "inspect" "405054c44244ccb1602cc403d1657e302f8d6107ab12bf7d5165006b57b8ee95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "405054c44244ccb1602cc403d1657e302f8d6107ab12bf7d5165006b57b8ee95", kill_on_drop: false }`
[INFO] [stdout] 405054c44244ccb1602cc403d1657e302f8d6107ab12bf7d5165006b57b8ee95