[INFO] fetching crate sampi 0.3.0...
[INFO] testing sampi-0.3.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate sampi 0.3.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate sampi 0.3.0 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 sampi 0.3.0
[INFO] finished tweaking crates.io crate sampi 0.3.0
[INFO] tweaked toml for crates.io crate sampi 0.3.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate sampi 0.3.0 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81a33a775556ef2189125e39b19f8ac785b0592b33f20c304fd773cef810bd8d
[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" "81a33a775556ef2189125e39b19f8ac785b0592b33f20c304fd773cef810bd8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81a33a775556ef2189125e39b19f8ac785b0592b33f20c304fd773cef810bd8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81a33a775556ef2189125e39b19f8ac785b0592b33f20c304fd773cef810bd8d", kill_on_drop: false }`
[INFO] [stdout] 81a33a775556ef2189125e39b19f8ac785b0592b33f20c304fd773cef810bd8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a2c3c4e4a93f931a9c49ea4721ea3922fd52e018c2d5462a53daba79d430fc5
[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" "4a2c3c4e4a93f931a9c49ea4721ea3922fd52e018c2d5462a53daba79d430fc5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling serde-big-array v0.1.5
[INFO] [stderr]    Compiling subtle v2.3.0
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]    Compiling strum v0.17.1
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling qrcodegen v1.6.0
[INFO] [stderr]    Compiling base32 v0.4.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling sha2 v0.9.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling num-complex v0.3.0
[INFO] [stderr]    Compiling num v0.3.0
[INFO] [stderr]    Compiling rust-base58 v0.0.4
[INFO] [stderr]    Compiling bincode v1.3.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling zeroize_derive v1.0.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling strum_macros v0.17.1
[INFO] [stderr]    Compiling zeroize v1.1.1
[INFO] [stderr]    Compiling curve25519-dalek v3.0.0
[INFO] [stderr]    Compiling thiserror v1.0.21
[INFO] [stderr]    Compiling structopt v0.3.20
[INFO] [stderr]    Compiling ed25519-dalek v1.0.1
[INFO] [stderr]    Compiling sampi v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 36s
[INFO] running `Command { std: "docker" "inspect" "4a2c3c4e4a93f931a9c49ea4721ea3922fd52e018c2d5462a53daba79d430fc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a2c3c4e4a93f931a9c49ea4721ea3922fd52e018c2d5462a53daba79d430fc5", kill_on_drop: false }`
[INFO] [stdout] 4a2c3c4e4a93f931a9c49ea4721ea3922fd52e018c2d5462a53daba79d430fc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91e2531a6d69d066a2d411f893679ef11cd45f43ce97e5f3e58645be71c0990f
[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" "91e2531a6d69d066a2d411f893679ef11cd45f43ce97e5f3e58645be71c0990f", kill_on_drop: false }`
[INFO] [stderr]    Compiling sampi v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `sampi::Result`
[INFO] [stdout]  --> examples/basic.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sampi::{Result, Sampi, SampiData, SampiKeyPair, SampiMetadata};
[INFO] [stdout]   |             ^^^^^^ no `Result` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sampi`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0432]: unresolved import `sampi::Result`
[INFO] [stdout]  --> examples/kv.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sampi::{Result, Sampi, SampiData, SampiKeyPair};
[INFO] [stdout]   |             ^^^^^^ no `Result` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `sampi::Result`
[INFO] [stdout]  --> examples/kv_original.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sampi::{Result, Sampi, SampiData, SampiKeyPair};
[INFO] [stdout]   |             ^^^^^^ no `Result` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `sampi::Result`
[INFO] [stdout]  --> examples/filter.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sampi::{Result, SampiData, SampiFilter, SampiKeyPair};
[INFO] [stdout]   |             ^^^^^^ no `Result` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `sampi::Result`
[INFO] [stdout]  --> examples/message.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sampi::{Result, SampiData, SampiKeyPair};
[INFO] [stdout]   |             ^^^^^^ no `Result` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `sampi::Result`
[INFO] [stdout]  --> examples/pow_benchmark.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sampi::{Result, SampiData, SampiKeyPair};
[INFO] [stdout]   |             ^^^^^^ no `Result` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `sampi::Result`
[INFO] [stdout]  --> examples/hmm.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sampi::{Result, Sampi, SampiData, SampiKeyPair};
[INFO] [stdout]   |             ^^^^^^ no `Result` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `flate2`
[INFO] [stdout]  --> examples/gzip.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use flate2::write::ZlibEncoder;
[INFO] [stdout]   |     ^^^^^^ use of undeclared crate or module `flate2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `flate2`
[INFO] [stdout]  --> examples/gzip.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use flate2::Compression;
[INFO] [stdout]   |     ^^^^^^ use of undeclared crate or module `flate2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `sampi::Result`
[INFO] [stdout]  --> examples/gzip.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sampi::{Result, SampiData, SampiKeyPair};
[INFO] [stdout]   |             ^^^^^^ no `Result` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `ZlibEncoder`
[INFO] [stdout]   --> examples/gzip.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut e = ZlibEncoder::new(Vec::new(), Compression::default());
[INFO] [stdout]    |                 ^^^^^^^^^^^ use of undeclared type `ZlibEncoder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "91e2531a6d69d066a2d411f893679ef11cd45f43ce97e5f3e58645be71c0990f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91e2531a6d69d066a2d411f893679ef11cd45f43ce97e5f3e58645be71c0990f", kill_on_drop: false }`
[INFO] [stdout] 91e2531a6d69d066a2d411f893679ef11cd45f43ce97e5f3e58645be71c0990f