[INFO] cloning repository https://github.com/gtr/caesar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gtr/caesar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgtr%2Fcaesar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgtr%2Fcaesar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 414dc48165ba848ce7a43b2c93b2a1333a6f50a1
[INFO] checking gtr/caesar against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgtr%2Fcaesar" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gtr/caesar on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gtr/caesar
[INFO] finished tweaking git repo https://github.com/gtr/caesar
[INFO] tweaked toml for git repo https://github.com/gtr/caesar written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/gtr/caesar already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cast v0.2.2
[INFO] [stderr]   Downloaded rand_xoshiro v0.1.0
[INFO] [stderr]   Downloaded criterion-plot v0.3.1
[INFO] [stderr]   Downloaded syn v0.15.35
[INFO] [stderr]   Downloaded tinytemplate v1.0.2
[INFO] [stderr]   Downloaded criterion v0.2.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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] 32e0ff5f897547e35d6aaf90b0d8b3a2802523058d28f97f9a6a4aef45c8bbf9
[INFO] running `Command { std: "docker" "start" "-a" "32e0ff5f897547e35d6aaf90b0d8b3a2802523058d28f97f9a6a4aef45c8bbf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32e0ff5f897547e35d6aaf90b0d8b3a2802523058d28f97f9a6a4aef45c8bbf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32e0ff5f897547e35d6aaf90b0d8b3a2802523058d28f97f9a6a4aef45c8bbf9", kill_on_drop: false }`
[INFO] [stdout] 32e0ff5f897547e35d6aaf90b0d8b3a2802523058d28f97f9a6a4aef45c8bbf9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3e7f53e4cc7142cb189cda9b7ff833ad64e92afba916ea2b01df0320f9bacbb
[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" "d3e7f53e4cc7142cb189cda9b7ff833ad64e92afba916ea2b01df0320f9bacbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking caesar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking arrayvec v0.4.10
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking walkdir v2.2.8
[INFO] [stderr]     Checking memchr v2.2.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking csv v1.0.7
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.78s
[INFO] running `Command { std: "docker" "inspect" "d3e7f53e4cc7142cb189cda9b7ff833ad64e92afba916ea2b01df0320f9bacbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3e7f53e4cc7142cb189cda9b7ff833ad64e92afba916ea2b01df0320f9bacbb", kill_on_drop: false }`
[INFO] [stdout] d3e7f53e4cc7142cb189cda9b7ff833ad64e92afba916ea2b01df0320f9bacbb