[INFO] updating cached repository https://github.com/paul-hammant/merkle-rust [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 046e888ea07c5555245e30a7bbd7cec0b6e24a18 [INFO] checking paul-hammant/merkle-rust against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaul-hammant%2Fmerkle-rust" "/workspace/builds/worker-2/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] [stderr] Checking out files: 88% (2780/3152) Checking out files: 89% (2806/3152) Checking out files: 90% (2837/3152) Checking out files: 91% (2869/3152) Checking out files: 92% (2900/3152) Checking out files: 93% (2932/3152) Checking out files: 94% (2963/3152) Checking out files: 95% (2995/3152) Checking out files: 96% (3026/3152) Checking out files: 97% (3058/3152) Checking out files: 98% (3089/3152) Checking out files: 99% (3121/3152) Checking out files: 100% (3152/3152) Checking out files: 100% (3152/3152), done. [INFO] validating manifest of git repo https://github.com/paul-hammant/merkle-rust on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7 [INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/paul-hammant/merkle-rust [INFO] finished tweaking git repo https://github.com/paul-hammant/merkle-rust [INFO] tweaked toml for git repo https://github.com/paul-hammant/merkle-rust written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/paul-hammant/merkle-rust already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Updating crates.io index [INFO] [stderr] error: the lock file /workspace/builds/worker-2/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] the lockfile is outdated, regenerating it [INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 3275a28f4b3ddc0d13e33067c5622611b647d2a4e3709930efd866f09c62030c [INFO] running `"docker" "start" "-a" "3275a28f4b3ddc0d13e33067c5622611b647d2a4e3709930efd866f09c62030c"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Checking inotify-sys v0.1.3 [INFO] [stderr] Checking filetime v0.2.8 [INFO] [stderr] Checking mio-extras v2.0.6 [INFO] [stderr] Checking tokio-reactor v0.1.11 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking inotify v0.6.1 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-udp v0.1.5 [INFO] [stderr] Checking notify v4.0.14 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-core v0.1.17 [INFO] [stderr] Checking tokio-proto v0.1.1 [INFO] [stderr] Checking hyper v0.11.27 [INFO] [stderr] Checking simple_merkle_tree_demo v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `std::sync::Mutex` [INFO] [stderr] --> src/server.rs:29:5 [INFO] [stderr] | [INFO] [stderr] 29 | use std::sync::Mutex; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/server.rs:43:23 [INFO] [stderr] | [INFO] [stderr] 43 | type Future = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `why` [INFO] [stderr] --> src/server.rs:88:21 [INFO] [stderr] | [INFO] [stderr] 88 | Err(why) => { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_why` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::sync::Mutex` [INFO] [stderr] --> src/server.rs:29:5 [INFO] [stderr] | [INFO] [stderr] 29 | use std::sync::Mutex; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/server.rs:43:23 [INFO] [stderr] | [INFO] [stderr] 43 | type Future = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `why` [INFO] [stderr] --> src/server.rs:88:21 [INFO] [stderr] | [INFO] [stderr] 88 | Err(why) => { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_why` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 24.22s [INFO] running `"docker" "inspect" "3275a28f4b3ddc0d13e33067c5622611b647d2a4e3709930efd866f09c62030c"` [INFO] running `"docker" "rm" "-f" "3275a28f4b3ddc0d13e33067c5622611b647d2a4e3709930efd866f09c62030c"` [INFO] [stdout] 3275a28f4b3ddc0d13e33067c5622611b647d2a4e3709930efd866f09c62030c