[INFO] crate arc_ast 0.1.0 is already in cache
[INFO] testing arc_ast-0.1.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate arc_ast 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate arc_ast 0.1.0 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arc_ast 0.1.0
[INFO] finished tweaking crates.io crate arc_ast 0.1.0
[INFO] tweaked toml for crates.io crate arc_ast 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1cfe079eb6d7f8f9e74d7f7ee45fb5cd753c6ebb1078295f76ec54e728203a67
[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" "1cfe079eb6d7f8f9e74d7f7ee45fb5cd753c6ebb1078295f76ec54e728203a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cfe079eb6d7f8f9e74d7f7ee45fb5cd753c6ebb1078295f76ec54e728203a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cfe079eb6d7f8f9e74d7f7ee45fb5cd753c6ebb1078295f76ec54e728203a67", kill_on_drop: false }`
[INFO] [stdout] 1cfe079eb6d7f8f9e74d7f7ee45fb5cd753c6ebb1078295f76ec54e728203a67
[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" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca3778b54f8f68ea2d9244884891f60dd840fec61b4af31731423ba9579e85e6
[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" "ca3778b54f8f68ea2d9244884891f60dd840fec61b4af31731423ba9579e85e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling arc_number v0.1.1
[INFO] [stderr]    Compiling arc_ast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ops::IndexMut`
[INFO] [stdout]  --> src/utils/ast_impl.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{collections::VecDeque, ops::IndexMut};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/utils/ast_traits.rs:4:33
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fmt::{self, Debug, Display, Error, Formatter},
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `length` is assigned to, but never used
[INFO] [stdout]   --> src/utils/ast_traits.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 let mut length = 0;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_length` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.88s
[INFO] running `Command { std: "docker" "inspect" "ca3778b54f8f68ea2d9244884891f60dd840fec61b4af31731423ba9579e85e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca3778b54f8f68ea2d9244884891f60dd840fec61b4af31731423ba9579e85e6", kill_on_drop: false }`
[INFO] [stdout] ca3778b54f8f68ea2d9244884891f60dd840fec61b4af31731423ba9579e85e6
[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" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffb9a44f3a15b8b5cdb4b91c50fb0a0f83a1b8eb8ec5c116a63acffbebbbb855
[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" "ffb9a44f3a15b8b5cdb4b91c50fb0a0f83a1b8eb8ec5c116a63acffbebbbb855", kill_on_drop: false }`
[INFO] [stderr]    Compiling arc_ast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ops::IndexMut`
[INFO] [stdout]  --> src/utils/ast_impl.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{collections::VecDeque, ops::IndexMut};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/utils/ast_traits.rs:4:33
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fmt::{self, Debug, Display, Error, Formatter},
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `length` is assigned to, but never used
[INFO] [stdout]   --> src/utils/ast_traits.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 let mut length = 0;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_length` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::IndexMut`
[INFO] [stdout]  --> src/utils/ast_impl.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{collections::VecDeque, ops::IndexMut};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/utils/ast_traits.rs:4:33
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fmt::{self, Debug, Display, Error, Formatter},
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `length` is assigned to, but never used
[INFO] [stdout]   --> src/utils/ast_traits.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 let mut length = 0;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_length` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "ffb9a44f3a15b8b5cdb4b91c50fb0a0f83a1b8eb8ec5c116a63acffbebbbb855", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffb9a44f3a15b8b5cdb4b91c50fb0a0f83a1b8eb8ec5c116a63acffbebbbb855", kill_on_drop: false }`
[INFO] [stdout] ffb9a44f3a15b8b5cdb4b91c50fb0a0f83a1b8eb8ec5c116a63acffbebbbb855
[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" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2cc4dcb9d37e57c3c47fe9af2bb5de8ee26084f3704b74b9e477169c72cb5420
[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" "2cc4dcb9d37e57c3c47fe9af2bb5de8ee26084f3704b74b9e477169c72cb5420", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `ops::IndexMut`
[INFO] [stderr]  --> src/utils/ast_impl.rs:4:34
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::{collections::VecDeque, ops::IndexMut};
[INFO] [stderr]   |                                  ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> src/utils/ast_traits.rs:4:33
[INFO] [stderr]   |
[INFO] [stderr] 4 |     fmt::{self, Debug, Display, Error, Formatter},
[INFO] [stderr]   |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]  --> src/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::collections::VecDeque;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ops::IndexMut`
[INFO] [stderr]  --> src/utils/ast_impl.rs:4:34
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::{collections::VecDeque, ops::IndexMut};
[INFO] [stderr]   |                                  ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> src/utils/ast_traits.rs:4:33
[INFO] [stderr]   |
[INFO] [stderr] 4 |     fmt::{self, Debug, Display, Error, Formatter},
[INFO] [stderr]   |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]  --> src/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::collections::VecDeque;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `length` is assigned to, but never used
[INFO] [stderr]   --> src/utils/ast_traits.rs:71:21
[INFO] [stderr]    |
[INFO] [stderr] 71 |                 let mut length = 0;
[INFO] [stderr]    |                     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_length` instead
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable `length` is assigned to, but never used
[INFO] [stderr]   --> src/utils/ast_traits.rs:71:21
[INFO] [stderr]    |
[INFO] [stderr] 71 |                 let mut length = 0;
[INFO] [stderr]    |                     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_length` instead
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/arc_ast-f2049d62cc710f6c
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/display-a72d2454e280f39c
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/number-c21b0a2852fada5b
[INFO] [stdout] test test ... ok
[INFO] [stdout] test test_dict ... ok
[INFO] [stdout] test test_list ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]    Doc-tests arc_ast
[INFO] [stdout] test test ... ok
[INFO] [stdout] test test_index ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2cc4dcb9d37e57c3c47fe9af2bb5de8ee26084f3704b74b9e477169c72cb5420", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cc4dcb9d37e57c3c47fe9af2bb5de8ee26084f3704b74b9e477169c72cb5420", kill_on_drop: false }`
[INFO] [stdout] 2cc4dcb9d37e57c3c47fe9af2bb5de8ee26084f3704b74b9e477169c72cb5420