[INFO] fetching crate conv 0.3.3...
[INFO] checking conv-0.3.3 against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] extracting crate conv 0.3.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate conv 0.3.3 on toolchain 8b72f65b805cbe4c261de45030d663f524f27376
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate conv 0.3.3
[INFO] finished tweaking crates.io crate conv 0.3.3
[INFO] tweaked toml for crates.io crate conv 0.3.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck v0.2.24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6258edfedc55898584904d87bdf8a97654ff471aa0c3913e42365f3a161ee11
[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" "e6258edfedc55898584904d87bdf8a97654ff471aa0c3913e42365f3a161ee11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6258edfedc55898584904d87bdf8a97654ff471aa0c3913e42365f3a161ee11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6258edfedc55898584904d87bdf8a97654ff471aa0c3913e42365f3a161ee11", kill_on_drop: false }`
[INFO] [stdout] e6258edfedc55898584904d87bdf8a97654ff471aa0c3913e42365f3a161ee11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "check" "--frozen" "--all" "--all-targets" "--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] 13783e6ba742b6e4a526300078013ad5173cfb0aae76a616b176eed3ba0a24d8
[INFO] running `Command { std: "docker" "start" "-a" "13783e6ba742b6e4a526300078013ad5173cfb0aae76a616b176eed3ba0a24d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking conv v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking quickcheck v0.2.24
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> tests/derive_try_from.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use] extern crate conv;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]  --> tests/util/mod.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / macro_rules! SL {
[INFO] [stdout] 2 | |     ($($tts:tt)*) => { stringify!($($tts)*) };
[INFO] [stdout] 3 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]  --> tests/util/mod.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | / macro_rules! as_expr {
[INFO] [stdout] 6 | |     ($e:expr) => {$e};
[INFO] [stdout] 7 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> tests/util/mod.rs:9:1
[INFO] [stdout]     |
[INFO] [stdout] 9   | / macro_rules! check {
[INFO] [stdout] 10  | |     (@ $from:ty, $to:ty=> $(;)*) => {};
[INFO] [stdout] 11  | |
[INFO] [stdout] 12  | |     (@ $from:ty, $to:ty=> cident; $($tail:tt)*) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 488 | |     };
[INFO] [stdout] 489 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> tests/util/mod.rs:491:1
[INFO] [stdout]     |
[INFO] [stdout] 491 | / macro_rules! for_bitness {
[INFO] [stdout] 492 | |     (32 {$($bits32:tt)*} 64 {$($bits64:tt)*}) => {
[INFO] [stdout] 493 | |         as_expr!(
[INFO] [stdout] 494 | |             {
[INFO] [stdout] ...   |
[INFO] [stdout] 508 | |     };
[INFO] [stdout] 509 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]  --> tests/util/mod.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / macro_rules! SL {
[INFO] [stdout] 2 | |     ($($tts:tt)*) => { stringify!($($tts)*) };
[INFO] [stdout] 3 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> tests/util/mod.rs:9:1
[INFO] [stdout]     |
[INFO] [stdout] 9   | / macro_rules! check {
[INFO] [stdout] 10  | |     (@ $from:ty, $to:ty=> $(;)*) => {};
[INFO] [stdout] 11  | |
[INFO] [stdout] 12  | |     (@ $from:ty, $to:ty=> cident; $($tail:tt)*) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 488 | |     };
[INFO] [stdout] 489 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]  --> tests/util/mod.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | / macro_rules! as_expr {
[INFO] [stdout] 6 | |     ($e:expr) => {$e};
[INFO] [stdout] 7 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> tests/util/mod.rs:491:1
[INFO] [stdout]     |
[INFO] [stdout] 491 | / macro_rules! for_bitness {
[INFO] [stdout] 492 | |     (32 {$($bits32:tt)*} 64 {$($bits64:tt)*}) => {
[INFO] [stdout] 493 | |         as_expr!(
[INFO] [stdout] 494 | |             {
[INFO] [stdout] ...   |
[INFO] [stdout] 508 | |     };
[INFO] [stdout] 509 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.68s
[INFO] running `Command { std: "docker" "inspect" "13783e6ba742b6e4a526300078013ad5173cfb0aae76a616b176eed3ba0a24d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13783e6ba742b6e4a526300078013ad5173cfb0aae76a616b176eed3ba0a24d8", kill_on_drop: false }`
[INFO] [stdout] 13783e6ba742b6e4a526300078013ad5173cfb0aae76a616b176eed3ba0a24d8