[INFO] fetching crate activities 0.1.0...
[INFO] testing activities-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate activities 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate activities 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate activities 0.1.0
[INFO] finished tweaking crates.io crate activities 0.1.0
[INFO] tweaked toml for crates.io crate activities 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate activities 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae40f7f974a9698bd78dbf22244a4924ad96117464e48af43fba201eef29a340
[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" "ae40f7f974a9698bd78dbf22244a4924ad96117464e48af43fba201eef29a340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae40f7f974a9698bd78dbf22244a4924ad96117464e48af43fba201eef29a340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae40f7f974a9698bd78dbf22244a4924ad96117464e48af43fba201eef29a340", kill_on_drop: false }`
[INFO] [stdout] ae40f7f974a9698bd78dbf22244a4924ad96117464e48af43fba201eef29a340
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--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] 8d6552b6a11f3163b4b3d0e56a48ba8cb386ba42240132d1232a60c99080aeed
[INFO] running `Command { std: "docker" "start" "-a" "8d6552b6a11f3163b4b3d0e56a48ba8cb386ba42240132d1232a60c99080aeed", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling inventory v0.1.6
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling isolang v1.0.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling inventory-impl v0.1.6
[INFO] [stderr]    Compiling ghost v0.1.1
[INFO] [stderr]    Compiling ctor v0.1.13
[INFO] [stderr]    Compiling typetag-impl v0.1.4
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling derive_builder_core v0.9.0
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling erased-serde v0.3.11
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling typetag v0.1.4
[INFO] [stderr]    Compiling activities v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `OrderedCollection`
[INFO] [stdout]  --> src/collection/ordered.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct OrderedCollection {}
[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 05s
[INFO] running `Command { std: "docker" "inspect" "8d6552b6a11f3163b4b3d0e56a48ba8cb386ba42240132d1232a60c99080aeed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d6552b6a11f3163b4b3d0e56a48ba8cb386ba42240132d1232a60c99080aeed", kill_on_drop: false }`
[INFO] [stdout] 8d6552b6a11f3163b4b3d0e56a48ba8cb386ba42240132d1232a60c99080aeed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] 1414fb1aad25b4d7b0f357fcb3c340f50b6fe66d0541487392c2bd139104c38a
[INFO] running `Command { std: "docker" "start" "-a" "1414fb1aad25b4d7b0f357fcb3c340f50b6fe66d0541487392c2bd139104c38a", kill_on_drop: false }`
[INFO] [stdout] warning: struct is never constructed: `OrderedCollection`
[INFO] [stdout]  --> src/collection/ordered.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct OrderedCollection {}
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling activities v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `OrderedCollection`
[INFO] [stdout]  --> src/collection/ordered.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct OrderedCollection {}
[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 test [unoptimized + debuginfo] target(s) in 9.80s
[INFO] running `Command { std: "docker" "inspect" "1414fb1aad25b4d7b0f357fcb3c340f50b6fe66d0541487392c2bd139104c38a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1414fb1aad25b4d7b0f357fcb3c340f50b6fe66d0541487392c2bd139104c38a", kill_on_drop: false }`
[INFO] [stdout] 1414fb1aad25b4d7b0f357fcb3c340f50b6fe66d0541487392c2bd139104c38a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7e5ea18e68c2805c048b6ab6e4b432b539483f1d89dcce49ec842912c7177dc2
[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" "7e5ea18e68c2805c048b6ab6e4b432b539483f1d89dcce49ec842912c7177dc2", kill_on_drop: false }`
[INFO] [stderr] warning: struct is never constructed: `OrderedCollection`
[INFO] [stderr]  --> src/collection/ordered.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct OrderedCollection {}
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `OrderedCollection`
[INFO] [stderr]  --> src/collection/ordered.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct OrderedCollection {}
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/activities-fa7ab3741c69fe83
[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] [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] [stderr]      Running /opt/rustwide/target/debug/deps/activities-9db3b4e036e82b6b
[INFO] [stderr]    Doc-tests activities
[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" "7e5ea18e68c2805c048b6ab6e4b432b539483f1d89dcce49ec842912c7177dc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e5ea18e68c2805c048b6ab6e4b432b539483f1d89dcce49ec842912c7177dc2", kill_on_drop: false }`
[INFO] [stdout] 7e5ea18e68c2805c048b6ab6e4b432b539483f1d89dcce49ec842912c7177dc2