[INFO] fetching crate rust-quiz 0.0.4...
[INFO] checking rust-quiz-0.0.4 against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] extracting crate rust-quiz 0.0.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rust-quiz 0.0.4 on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-quiz 0.0.4
[INFO] finished tweaking crates.io crate rust-quiz 0.0.4
[INFO] tweaked toml for crates.io crate rust-quiz 0.0.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate rust-quiz 0.0.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded http v0.2.2
[INFO] [stderr]   Downloaded async-stream v0.3.0
[INFO] [stderr]   Downloaded tracing-core v0.1.17
[INFO] [stderr]   Downloaded tokio-util v0.6.0
[INFO] [stderr]   Downloaded bytes v1.0.0
[INFO] [stderr]   Downloaded serde_json v1.0.61
[INFO] [stderr]   Downloaded pin-project-internal v0.4.27
[INFO] [stderr]   Downloaded pin-project v0.4.27
[INFO] [stderr]   Downloaded tokio-stream v0.1.0
[INFO] [stderr]   Downloaded hyper v0.14.2
[INFO] [stderr]   Downloaded indexmap v1.6.1
[INFO] [stderr]   Downloaded hyper-staticfile v0.6.0
[INFO] [stderr]   Downloaded oqueue v0.1.2
[INFO] [stderr]   Downloaded futures-core v0.3.8
[INFO] [stderr]   Downloaded proc-macro-nested v0.1.6
[INFO] [stderr]   Downloaded slab v0.4.2
[INFO] [stderr]   Downloaded pin-project-internal v1.0.2
[INFO] [stderr]   Downloaded futures v0.3.8
[INFO] [stderr]   Downloaded futures-executor v0.3.8
[INFO] [stderr]   Downloaded futures-channel v0.3.8
[INFO] [stderr]   Downloaded futures-util v0.3.8
[INFO] [stderr]   Downloaded syn v1.0.56
[INFO] [stderr]   Downloaded libc v0.2.81
[INFO] [stderr]   Downloaded futures-io v0.3.8
[INFO] [stderr]   Downloaded futures-macro v0.3.8
[INFO] [stderr]   Downloaded futures-task v0.3.8
[INFO] [stderr]   Downloaded futures-sink v0.3.8
[INFO] [stderr]   Downloaded async-stream-impl v0.3.0
[INFO] [stderr]   Downloaded pin-project v1.0.2
[INFO] [stderr]   Downloaded serde_derive v1.0.118
[INFO] [stderr]   Downloaded serde v1.0.118
[INFO] [stderr]   Downloaded miow v0.3.6
[INFO] [stderr]   Downloaded parking_lot_core v0.8.2
[INFO] [stderr]   Downloaded pin-project-lite v0.2.0
[INFO] [stderr]   Downloaded tracing-futures v0.2.4
[INFO] [stderr]   Downloaded readonly v0.2.0
[INFO] [stderr]   Downloaded tokio-macros v1.0.0
[INFO] [stderr]   Downloaded const_fn v0.4.4
[INFO] [stderr]   Downloaded remain v0.2.2
[INFO] [stderr]   Downloaded mio v0.7.7
[INFO] [stderr]   Downloaded smallvec v1.6.0
[INFO] [stderr]   Downloaded h2 v0.3.0
[INFO] [stderr]   Downloaded tracing v0.1.22
[INFO] [stderr]   Downloaded http-body v0.4.0
[INFO] [stderr]   Downloaded tower-service v0.3.0
[INFO] [stderr]   Downloaded tokio v1.0.1
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1be396d64b1ec062ffc6a2a31cebf0f609645c17ad27706a9bb4464dc09ee157
[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" "1be396d64b1ec062ffc6a2a31cebf0f609645c17ad27706a9bb4464dc09ee157", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1be396d64b1ec062ffc6a2a31cebf0f609645c17ad27706a9bb4464dc09ee157", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1be396d64b1ec062ffc6a2a31cebf0f609645c17ad27706a9bb4464dc09ee157", kill_on_drop: false }`
[INFO] [stdout] 1be396d64b1ec062ffc6a2a31cebf0f609645c17ad27706a9bb4464dc09ee157
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc77b6ea51830cbd84a69359009a873592384a59d5eb40d0b78ae271966b8859
[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" "bc77b6ea51830cbd84a69359009a873592384a59d5eb40d0b78ae271966b8859", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking futures-sink v0.3.8
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking http v0.2.2
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling tokio v1.0.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking http-body v0.4.0
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling readonly v0.2.0
[INFO] [stderr]    Compiling remain v0.2.2
[INFO] [stderr]     Checking oqueue v0.1.2
[INFO] [stderr]     Checking async-stream v0.3.0
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking tokio-stream v0.1.0
[INFO] [stderr]     Checking tokio-util v0.6.0
[INFO] [stderr]     Checking h2 v0.3.0
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking hyper v0.14.2
[INFO] [stderr]     Checking hyper-staticfile v0.6.0
[INFO] [stderr]     Checking rust-quiz v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 49s
[INFO] running `Command { std: "docker" "inspect" "bc77b6ea51830cbd84a69359009a873592384a59d5eb40d0b78ae271966b8859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc77b6ea51830cbd84a69359009a873592384a59d5eb40d0b78ae271966b8859", kill_on_drop: false }`
[INFO] [stdout] bc77b6ea51830cbd84a69359009a873592384a59d5eb40d0b78ae271966b8859