[INFO] cloning repository https://github.com/slinkydeveloper/json-fuse-fs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/slinkydeveloper/json-fuse-fs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslinkydeveloper%2Fjson-fuse-fs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslinkydeveloper%2Fjson-fuse-fs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f2d4c22df2a067af84586f4bf61648d4e3abb6a
[INFO] checking slinkydeveloper/json-fuse-fs against master#2e5723137b2b88368d018b262a0a823a1423131b for pr-78935-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslinkydeveloper%2Fjson-fuse-fs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/slinkydeveloper/json-fuse-fs on toolchain 2e5723137b2b88368d018b262a0a823a1423131b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/slinkydeveloper/json-fuse-fs
[INFO] finished tweaking git repo https://github.com/slinkydeveloper/json-fuse-fs
[INFO] tweaked toml for git repo https://github.com/slinkydeveloper/json-fuse-fs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/slinkydeveloper/json-fuse-fs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "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] 530597a1acae76302d5f6ee6e59dc27664c9e05333a4172459f6dd6463ec130f
[INFO] running `Command { std: "docker" "start" "-a" "530597a1acae76302d5f6ee6e59dc27664c9e05333a4172459f6dd6463ec130f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "530597a1acae76302d5f6ee6e59dc27664c9e05333a4172459f6dd6463ec130f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "530597a1acae76302d5f6ee6e59dc27664c9e05333a4172459f6dd6463ec130f", kill_on_drop: false }`
[INFO] [stdout] 530597a1acae76302d5f6ee6e59dc27664c9e05333a4172459f6dd6463ec130f
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef435d31b88a60dc6b096f88cf3efc89f1bc21bcae26c821b66003afbfe5d619
[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" "ef435d31b88a60dc6b096f88cf3efc89f1bc21bcae26c821b66003afbfe5d619", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking futures v0.1.28
[INFO] [stderr]    Compiling cc v1.0.38
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[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking indexmap v1.1.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
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[INFO] [stderr]     Checking termcolor v1.0.5
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[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking string v0.2.1
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[INFO] [stderr]     Checking tokio-current-thread v0.1.6
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[INFO] [stderr]     Checking parking_lot_core v0.4.0
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[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking fuse v0.4.0-dev (https://github.com/zargony/rust-fuse#df237bba)
[INFO] [stderr]     Checking parking_lot v0.7.1
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[INFO] [stderr]     Checking tokio-reactor v0.1.9
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[INFO] [stderr]    Compiling openssl v0.10.24
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[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking regex v1.2.0
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[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking publicsuffix v1.5.3
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.20
[INFO] [stderr]     Checking json_fuse_fs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:160:27
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn ops(&self) -> &FSFileTypeOps {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^ help: use `dyn`: `dyn FSFileTypeOps`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:160:27
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn ops(&self) -> &FSFileTypeOps {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^ help: use `dyn`: `dyn FSFileTypeOps`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/http.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             resp.read_to_end(&mut body);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/http.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             resp.read_to_end(&mut body);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fs_tree_root`
[INFO] [stdout]   --> src/fs.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fs_tree_root: Rc<FSNode>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fs_tree_root`
[INFO] [stdout]   --> src/fs.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fs_tree_root: Rc<FSNode>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 00s
[INFO] running `Command { std: "docker" "inspect" "ef435d31b88a60dc6b096f88cf3efc89f1bc21bcae26c821b66003afbfe5d619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef435d31b88a60dc6b096f88cf3efc89f1bc21bcae26c821b66003afbfe5d619", kill_on_drop: false }`
[INFO] [stdout] ef435d31b88a60dc6b096f88cf3efc89f1bc21bcae26c821b66003afbfe5d619