[INFO] fetching crate snare 0.4.0...
[INFO] checking snare-0.4.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate snare 0.4.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate snare 0.4.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate snare 0.4.0
[INFO] finished tweaking crates.io crate snare 0.4.0
[INFO] tweaked toml for crates.io crate snare 0.4.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate snare 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sparsevec v0.1.3
[INFO] [stderr]   Downloaded cactus v1.0.5
[INFO] [stderr]   Downloaded lrlex v0.7.0
[INFO] [stderr]   Downloaded rerun_except v0.1.2
[INFO] [stderr]   Downloaded lrpar v0.7.0
[INFO] [stderr]   Downloaded cfgrammar v0.7.0
[INFO] [stderr]   Downloaded lrtable v0.7.0
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b5cd32c2bf319d14b22af95655c4180dd319586bb69225d1ff56c6770c4f38f
[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" "7b5cd32c2bf319d14b22af95655c4180dd319586bb69225d1ff56c6770c4f38f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b5cd32c2bf319d14b22af95655c4180dd319586bb69225d1ff56c6770c4f38f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b5cd32c2bf319d14b22af95655c4180dd319586bb69225d1ff56c6770c4f38f", kill_on_drop: false }`
[INFO] [stdout] 7b5cd32c2bf319d14b22af95655c4180dd319586bb69225d1ff56c6770c4f38f
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b36d96e355f027352e50a30b217e36a6ab1d0526c709ed117414252478b3ca5
[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" "1b36d96e355f027352e50a30b217e36a6ab1d0526c709ed117414252478b3ca5", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling macro-attr v0.2.0
[INFO] [stderr]    Compiling cactus v1.0.5
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling vob v2.0.4
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]    Compiling crossbeam-channel v0.4.2
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking rmp v0.8.9
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking filetime v0.2.9
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking users v0.10.0
[INFO] [stderr]     Checking secstr v0.4.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking signal-hook v0.1.13
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling globset v0.4.5
[INFO] [stderr]    Compiling vergen v3.1.0
[INFO] [stderr]    Compiling ignore v0.4.14
[INFO] [stderr]    Compiling lrpar v0.7.0
[INFO] [stderr]    Compiling rerun_except v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling typename_derive v0.1.4
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.9
[INFO] [stderr]    Compiling typename v0.1.2
[INFO] [stderr]     Checking tokio v0.2.20
[INFO] [stderr]     Checking pin-project v0.4.9
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking h2 v0.2.4
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking hyper v0.13.5
[INFO] [stderr]     Checking packedvec v1.2.2
[INFO] [stderr]     Checking rmp-serde v0.14.3
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking cfgrammar v0.7.0
[INFO] [stderr]     Checking sparsevec v0.1.3
[INFO] [stderr]     Checking lrtable v0.7.0
[INFO] [stderr]     Checking lrlex v0.7.0
[INFO] [stderr]    Compiling snare v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 04s
[INFO] running `Command { std: "docker" "inspect" "1b36d96e355f027352e50a30b217e36a6ab1d0526c709ed117414252478b3ca5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b36d96e355f027352e50a30b217e36a6ab1d0526c709ed117414252478b3ca5", kill_on_drop: false }`
[INFO] [stdout] 1b36d96e355f027352e50a30b217e36a6ab1d0526c709ed117414252478b3ca5