[INFO] fetching crate ossa-crdt 0.0.1...
[INFO] checking ossa-crdt-0.0.1 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate ossa-crdt 0.0.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate ossa-crdt 0.0.1
[INFO] finished tweaking crates.io crate ossa-crdt 0.0.1
[INFO] tweaked toml for crates.io crate ossa-crdt 0.0.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ossa-crdt 0.0.1 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ossa-crdt 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ossa-typeable-derive v0.0.1
[INFO] [stderr]   Downloaded ossa-typeable v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3792313a72765e07339c57627f7a17cd1ce2acb52e58374322b79b2b5f12e3dc
[INFO] running `Command { std: "docker" "start" "-a" "3792313a72765e07339c57627f7a17cd1ce2acb52e58374322b79b2b5f12e3dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3792313a72765e07339c57627f7a17cd1ce2acb52e58374322b79b2b5f12e3dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3792313a72765e07339c57627f7a17cd1ce2acb52e58374322b79b2b5f12e3dc", kill_on_drop: false }`
[INFO] [stdout] 3792313a72765e07339c57627f7a17cd1ce2acb52e58374322b79b2b5f12e3dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 572df2e21e1d3b22079199ef45e7b4ba0966cffa4df3ed69ffff2c4bccc0e02f
[INFO] running `Command { std: "docker" "start" "-a" "572df2e21e1d3b22079199ef45e7b4ba0966cffa4df3ed69ffff2c4bccc0e02f", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]     Checking cpufeatures v0.2.17
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling im v15.1.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking sized-chunks v0.6.5
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling ossa-typeable-derive v0.0.1
[INFO] [stderr]     Checking ossa-typeable v0.0.1
[INFO] [stderr]     Checking ossa-crdt v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/set/orset.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ord`
[INFO] [stdout]  --> src/set/orset.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::Ord;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]  --> src/set/orset.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::BTreeMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeSet`
[INFO] [stdout]  --> src/set/orset.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::BTreeSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/set/orset.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ord`
[INFO] [stdout]  --> src/set/orset.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::Ord;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]  --> src/set/orset.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::BTreeMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeSet`
[INFO] [stdout]  --> src/set/orset.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::BTreeSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Letter`, `Delete`, and `Root` are never constructed
[INFO] [stdout]   --> src/text/causal_tree.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum Letter<A> {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 31 |     Letter(A),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 32 |     Delete,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 33 |     /// Root node. Should only be used as the initial node on creation.
[INFO] [stdout] 34 |     Root,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Letter` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LamportState` is never constructed
[INFO] [stdout]   --> src/time/lamport.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct LamportState<Id>(PhantomData<Id>);
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Letter`, `Delete`, and `Root` are never constructed
[INFO] [stdout]   --> src/text/causal_tree.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum Letter<A> {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 31 |     Letter(A),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 32 |     Delete,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 33 |     /// Root node. Should only be used as the initial node on creation.
[INFO] [stdout] 34 |     Root,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Letter` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LamportState` is never constructed
[INFO] [stdout]   --> src/time/lamport.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct LamportState<Id>(PhantomData<Id>);
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.85s
[INFO] running `Command { std: "docker" "inspect" "572df2e21e1d3b22079199ef45e7b4ba0966cffa4df3ed69ffff2c4bccc0e02f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "572df2e21e1d3b22079199ef45e7b4ba0966cffa4df3ed69ffff2c4bccc0e02f", kill_on_drop: false }`
[INFO] [stdout] 572df2e21e1d3b22079199ef45e7b4ba0966cffa4df3ed69ffff2c4bccc0e02f