[INFO] fetching crate conserve 0.6.10...
[INFO] checking conserve-0.6.10 against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] extracting crate conserve 0.6.10 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate conserve 0.6.10 on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate conserve 0.6.10
[INFO] finished tweaking crates.io crate conserve 0.6.10
[INFO] tweaked toml for crates.io crate conserve 0.6.10 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate conserve 0.6.10 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded assert_fs v1.0.0
[INFO] [stderr]   Downloaded thousands v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1cac11b76f28bb3806c46b4f1059ac7dc979838321081fd09c14f2694b7a82b
[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" "b1cac11b76f28bb3806c46b4f1059ac7dc979838321081fd09c14f2694b7a82b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1cac11b76f28bb3806c46b4f1059ac7dc979838321081fd09c14f2694b7a82b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1cac11b76f28bb3806c46b4f1059ac7dc979838321081fd09c14f2694b7a82b", kill_on_drop: false }`
[INFO] [stdout] b1cac11b76f28bb3806c46b4f1059ac7dc979838321081fd09c14f2694b7a82b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef2b32c472627004838290ee7ab4f09dcb07c950b43da1ebab313a6a84808bef
[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" "ef2b32c472627004838290ee7ab4f09dcb07c950b43da1ebab313a6a84808bef", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling snap v1.0.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]    Compiling escargot v0.5.0
[INFO] [stderr]     Checking thousands v0.2.0
[INFO] [stderr]     Checking instant v0.1.8
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking walkdir v0.1.8
[INFO] [stderr]     Checking mio v0.7.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking copy_dir v0.1.2
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking crossterm v0.18.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking crossbeam-epoch v0.9.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking predicates v1.0.5
[INFO] [stderr]     Checking ignore v0.4.16
[INFO] [stderr]     Checking assert_cmd v1.0.1
[INFO] [stderr]     Checking globwalk v0.7.3
[INFO] [stderr]     Checking assert_fs v1.0.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking conserve v0.6.10 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 30s
[INFO] running `Command { std: "docker" "inspect" "ef2b32c472627004838290ee7ab4f09dcb07c950b43da1ebab313a6a84808bef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef2b32c472627004838290ee7ab4f09dcb07c950b43da1ebab313a6a84808bef", kill_on_drop: false }`
[INFO] [stdout] ef2b32c472627004838290ee7ab4f09dcb07c950b43da1ebab313a6a84808bef