[INFO] fetching crate slipstream 0.1.1...
[INFO] checking slipstream-0.1.1 against try#81275a1445c7502a974118e0c69b795ab60be991 for pr-80243
[INFO] extracting crate slipstream 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate slipstream 0.1.1 on toolchain 81275a1445c7502a974118e0c69b795ab60be991
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slipstream 0.1.1
[INFO] finished tweaking crates.io crate slipstream 0.1.1
[INFO] tweaked toml for crates.io crate slipstream 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate slipstream 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded url v2.1.1
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded rand_pcg v0.1.2
[INFO] [stderr]   Downloaded byteorder v1.3.4
[INFO] [stderr]   Downloaded generic-array v0.14.4
[INFO] [stderr]   Downloaded quote v1.0.7
[INFO] [stderr]   Downloaded matches v0.1.8
[INFO] [stderr]   Downloaded autocfg v0.1.7
[INFO] [stderr]   Downloaded version_check v0.9.2
[INFO] [stderr]   Downloaded tempfile v3.1.0
[INFO] [stderr]   Downloaded getrandom v0.1.15
[INFO] [stderr]   Downloaded regex-syntax v0.6.18
[INFO] [stderr]   Downloaded rand v0.6.5
[INFO] [stderr]   Downloaded rand_hc v0.1.0
[INFO] [stderr]   Downloaded quick-error v1.2.3
[INFO] [stderr]   Downloaded rand_core v0.3.1
[INFO] [stderr]   Downloaded rand_chacha v0.1.1
[INFO] [stderr]   Downloaded rand_os v0.1.3
[INFO] [stderr]   Downloaded rand_chacha v0.2.2
[INFO] [stderr]   Downloaded rand_xorshift v0.1.1
[INFO] [stderr]   Downloaded remove_dir_all v0.5.3
[INFO] [stderr]   Downloaded num-traits v0.2.12
[INFO] [stderr]   Downloaded rdrand v0.4.0
[INFO] [stderr]   Downloaded typenum v1.12.0
[INFO] [stderr]   Downloaded rand v0.7.3
[INFO] [stderr]   Downloaded serde v1.0.116
[INFO] [stderr]   Downloaded regex v1.3.9
[INFO] [stderr]   Downloaded toml v0.5.6
[INFO] [stderr]   Downloaded unicode-bidi v0.3.4
[INFO] [stderr]   Downloaded unicode-normalization v0.1.13
[INFO] [stderr]   Downloaded tinyvec v0.3.4
[INFO] [stderr]   Downloaded cloudabi v0.0.3
[INFO] [stderr]   Downloaded fuchsia-cprng v0.1.1
[INFO] [stderr]   Downloaded wasi v0.9.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded pulldown-cmark v0.7.2
[INFO] [stderr]   Downloaded bit-vec v0.6.2
[INFO] [stderr]   Downloaded semver-parser v0.9.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.21
[INFO] [stderr]   Downloaded fnv v1.0.7
[INFO] [stderr]   Downloaded memchr v2.3.3
[INFO] [stderr]   Downloaded unicase v2.6.0
[INFO] [stderr]   Downloaded idna v0.2.0
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.9
[INFO] [stderr]   Downloaded libc v0.2.77
[INFO] [stderr]   Downloaded rusty-fork v0.2.2
[INFO] [stderr]   Downloaded proptest v0.9.6
[INFO] [stderr]   Downloaded rand_hc v0.2.0
[INFO] [stderr]   Downloaded rand_isaac v0.1.1
[INFO] [stderr]   Downloaded rand_jitter v0.1.4
[INFO] [stderr]   Downloaded redox_syscall v0.1.57
[INFO] [stderr]   Downloaded rand_core v0.5.1
[INFO] [stderr]   Downloaded wait-timeout v0.2.0
[INFO] [stderr]   Downloaded percent-encoding v2.1.0
[INFO] [stderr]   Downloaded bit-set v0.5.2
[INFO] [stderr]   Downloaded version-sync v0.9.1
[INFO] [stderr]   Downloaded syn v1.0.41
[INFO] [stderr]   Downloaded multiversion v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+81275a1445c7502a974118e0c69b795ab60be991" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc220aff2fa84c3b2d374140a11e163d6cb2c0e427bf7e89e3548703095bb228
[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" "cc220aff2fa84c3b2d374140a11e163d6cb2c0e427bf7e89e3548703095bb228", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc220aff2fa84c3b2d374140a11e163d6cb2c0e427bf7e89e3548703095bb228", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc220aff2fa84c3b2d374140a11e163d6cb2c0e427bf7e89e3548703095bb228", kill_on_drop: false }`
[INFO] [stdout] cc220aff2fa84c3b2d374140a11e163d6cb2c0e427bf7e89e3548703095bb228
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+81275a1445c7502a974118e0c69b795ab60be991" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81397f06e133023c5fec25bdc759d844eba3dc2fbbc905589e9e6827e582bf23
[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" "81397f06e133023c5fec25bdc759d844eba3dc2fbbc905589e9e6827e582bf23", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]     Checking bit-vec v0.6.2
[INFO] [stderr]     Checking semver-parser v0.9.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking unicode-normalization v0.1.13
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking slipstream v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking proptest v0.9.6
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking version-sync v0.9.1
[INFO] [stderr]    Compiling multiversion v0.5.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.94s
[INFO] running `Command { std: "docker" "inspect" "81397f06e133023c5fec25bdc759d844eba3dc2fbbc905589e9e6827e582bf23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81397f06e133023c5fec25bdc759d844eba3dc2fbbc905589e9e6827e582bf23", kill_on_drop: false }`
[INFO] [stdout] 81397f06e133023c5fec25bdc759d844eba3dc2fbbc905589e9e6827e582bf23