[INFO] cloning repository https://github.com/steffenhaug/freelist [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/steffenhaug/freelist" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteffenhaug%2Ffreelist", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteffenhaug%2Ffreelist'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2e6f8cdbf15480ec39f7c8a8c8e80c100136e42a [INFO] documenting steffenhaug/freelist against beta-2020-08-29 for beta-1.47-rustdoc-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteffenhaug%2Ffreelist" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/steffenhaug/freelist on toolchain beta-2020-08-29 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/steffenhaug/freelist [INFO] finished tweaking git repo https://github.com/steffenhaug/freelist [INFO] tweaked toml for git repo https://github.com/steffenhaug/freelist written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/steffenhaug/freelist already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded failure_derive v0.1.4 [INFO] [stderr] Downloaded pest v1.0.6 [INFO] [stderr] Downloaded criterion-plot v0.2.7 [INFO] [stderr] Downloaded itertools v0.7.11 [INFO] [stderr] Downloaded failure v0.1.4 [INFO] [stderr] Downloaded criterion v0.2.7 [INFO] [stderr] Downloaded pest_derive v1.0.8 [INFO] [stderr] Downloaded serde_derive v1.0.83 [INFO] [stderr] Downloaded handlebars v1.0.5 [INFO] [stderr] Downloaded thread-scoped v1.0.2 [INFO] [stderr] Downloaded criterion-stats v0.3.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-08-29" "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] 35105057c08f02c1c9c3d55837f9f9b7222cad57f3dfd926b1f75afe6881ee64 [INFO] running `Command { std: "docker" "start" "-a" "35105057c08f02c1c9c3d55837f9f9b7222cad57f3dfd926b1f75afe6881ee64", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "35105057c08f02c1c9c3d55837f9f9b7222cad57f3dfd926b1f75afe6881ee64", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "35105057c08f02c1c9c3d55837f9f9b7222cad57f3dfd926b1f75afe6881ee64", kill_on_drop: false }` [INFO] [stdout] 35105057c08f02c1c9c3d55837f9f9b7222cad57f3dfd926b1f75afe6881ee64 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 5707d1170efc8b4fd8b6796e2df39825e7bdc73cede6f1a04b8c54f048c59bd0 [INFO] running `Command { std: "docker" "start" "-a" "5707d1170efc8b4fd8b6796e2df39825e7bdc73cede6f1a04b8c54f048c59bd0", kill_on_drop: false }` [INFO] [stderr] Checking allocators v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Documenting allocators v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `RefMut`, `Ref` [INFO] [stdout] --> src/pile.rs:2:26 [INFO] [stdout] | [INFO] [stdout] 2 | use std::cell::{RefCell, Ref, RefMut}; [INFO] [stdout] | ^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fmt` [INFO] [stdout] --> src/pile.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::fmt; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `data` [INFO] [stdout] --> src/slotmap.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | data: Vec>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `slots` [INFO] [stdout] --> src/slotmap.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | slots: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `free_data` [INFO] [stdout] --> src/slotmap.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | free_data: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `free_slots` [INFO] [stdout] --> src/slotmap.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | free_slots: Option [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/pile.rs:83:9 [INFO] [stdout] | [INFO] [stdout] 83 | / mem::replace( [INFO] [stdout] 84 | | &mut self.memory[address], [INFO] [stdout] 85 | | Entry::Free { [INFO] [stdout] 86 | | next: self.free_head, [INFO] [stdout] 87 | | }, [INFO] [stdout] 88 | | ); [INFO] [stdout] | |__________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.72s [INFO] running `Command { std: "docker" "inspect" "5707d1170efc8b4fd8b6796e2df39825e7bdc73cede6f1a04b8c54f048c59bd0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5707d1170efc8b4fd8b6796e2df39825e7bdc73cede6f1a04b8c54f048c59bd0", kill_on_drop: false }` [INFO] [stdout] 5707d1170efc8b4fd8b6796e2df39825e7bdc73cede6f1a04b8c54f048c59bd0