[INFO] cloning repository https://github.com/project-polya/nutshell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/project-polya/nutshell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fproject-polya%2Fnutshell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fproject-polya%2Fnutshell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7d7265e9689db2c95087161cafdfbdf0153df5c
[INFO] checking project-polya/nutshell against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fproject-polya%2Fnutshell" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/project-polya/nutshell on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/project-polya/nutshell
[INFO] finished tweaking git repo https://github.com/project-polya/nutshell
[INFO] tweaked toml for git repo https://github.com/project-polya/nutshell written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6b3fbce8dcee99c2fa84d95ec5c73168f835f92e66ea5eaf08b2a07ac057af9
[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" "e6b3fbce8dcee99c2fa84d95ec5c73168f835f92e66ea5eaf08b2a07ac057af9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6b3fbce8dcee99c2fa84d95ec5c73168f835f92e66ea5eaf08b2a07ac057af9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6b3fbce8dcee99c2fa84d95ec5c73168f835f92e66ea5eaf08b2a07ac057af9", kill_on_drop: false }`
[INFO] [stdout] e6b3fbce8dcee99c2fa84d95ec5c73168f835f92e66ea5eaf08b2a07ac057af9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe3a47bbe72dfc641c965af37e936f1cb3a3b59b19bfcc7186f58fc435c43cee
[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" "fe3a47bbe72dfc641c965af37e936f1cb3a3b59b19bfcc7186f58fc435c43cee", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]    Compiling encoding_rs v0.8.24
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ipnet v2.3.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking futures-channel v0.3.7
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking futures-task v0.3.7
[INFO] [stderr]     Checking unicode-normalization v0.1.13
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.3.15
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.1
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking pin-project v1.0.1
[INFO] [stderr]     Checking futures-util v0.3.7
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking hyper v0.13.8
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.8
[INFO] [stderr]     Checking nutshell v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 20s
[INFO] running `Command { std: "docker" "inspect" "fe3a47bbe72dfc641c965af37e936f1cb3a3b59b19bfcc7186f58fc435c43cee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe3a47bbe72dfc641c965af37e936f1cb3a3b59b19bfcc7186f58fc435c43cee", kill_on_drop: false }`
[INFO] [stdout] fe3a47bbe72dfc641c965af37e936f1cb3a3b59b19bfcc7186f58fc435c43cee